generic: fold yaffs_git_2010_10_20 patch to generic/files

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 34013

1 files changed, 2370 insertions, 4378 deletions

diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_guts.c b/target/linux/generic/files/fs/yaffs2/yaffs_guts.c
index d89b87a..36e11f5 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_guts.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_guts.c
@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -10,11 +10,8 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-
-const char *yaffs_guts_c_version =
-    "$Id: yaffs_guts.c,v 1.82 2009-03-09 04:24:17 charles Exp $";
-
 #include "yportenv.h"
+#include "yaffs_trace.h"
 
 #include "yaffsinterface.h"
 #include "yaffs_guts.h"
@@ -22,118 +19,109 @@ const char *yaffs_guts_c_version =
 #include "yaffs_getblockinfo.h"
 
 #include "yaffs_tagscompat.h"
-#ifndef CONFIG_YAFFS_USE_OWN_SORT
-#include "yaffs_qsort.h"
-#endif
+
 #include "yaffs_nand.h"
 
-#include "yaffs_checkptrw.h"
+#include "yaffs_yaffs1.h"
+#include "yaffs_yaffs2.h"
+#include "yaffs_bitmap.h"
+#include "yaffs_verify.h"
 
 #include "yaffs_nand.h"
 #include "yaffs_packedtags2.h"
 
+#include "yaffs_nameval.h"
+#include "yaffs_allocator.h"
 
-#define YAFFS_PASSIVE_GC_CHUNKS 2
+/* Note YAFFS_GC_GOOD_ENOUGH must be <= YAFFS_GC_PASSIVE_THRESHOLD */
+#define YAFFS_GC_GOOD_ENOUGH 2
+#define YAFFS_GC_PASSIVE_THRESHOLD 4
 
 #include "yaffs_ecc.h"
 
 
+
 /* Robustification (if it ever comes about...) */
-static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND);
-static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND,
+static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block);
+static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk,
 		int erasedOk);
-static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
+static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk,
 				const __u8 *data,
-				const yaffs_ExtendedTags *tags);
-static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
-				const yaffs_ExtendedTags *tags);
+				const yaffs_ext_tags *tags);
+static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk,
+				const yaffs_ext_tags *tags);
 
 /* Other local prototypes */
-static int yaffs_UnlinkObject(yaffs_Object *obj);
-static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj);
-
-static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList);
+static void yaffs_update_parent(yaffs_obj_t *obj);
+static int yaffs_unlink_obj(yaffs_obj_t *obj);
+static int yaffs_obj_cache_dirty(yaffs_obj_t *obj);
 
-static int yaffs_WriteNewChunkWithTagsToNAND(yaffs_Device *dev,
+static int yaffs_write_new_chunk(yaffs_dev_t *dev,
 					const __u8 *buffer,
-					yaffs_ExtendedTags *tags,
+					yaffs_ext_tags *tags,
 					int useReserve);
-static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode,
-				int chunkInNAND, int inScan);
 
-static yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number,
-					yaffs_ObjectType type);
-static void yaffs_AddObjectToDirectory(yaffs_Object *directory,
-				yaffs_Object *obj);
-static int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name,
-				int force, int isShrink, int shadows);
-static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj);
-static int yaffs_CheckStructures(void);
-static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level,
-			int chunkOffset, int *limit);
-static int yaffs_DoGenericObjectDeletion(yaffs_Object *in);
 
-static yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device *dev, int blockNo);
+static yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number,
+					yaffs_obj_type type);
 
 
-static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
-				int chunkInNAND);
+static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod);
 
-static int yaffs_UnlinkWorker(yaffs_Object *obj);
+static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj);
+static int yaffs_check_structures(void);
+static int yaffs_generic_obj_del(yaffs_obj_t *in);
 
-static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId,
-			int chunkInObject);
+static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev,
+				int nand_chunk);
 
-static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve,
-				yaffs_BlockInfo **blockUsedPtr);
+static int yaffs_unlink_worker(yaffs_obj_t *obj);
 
-static void yaffs_VerifyFreeChunks(yaffs_Device *dev);
+static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id,
+			int chunkInObject);
 
-static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in);
+static int yaffs_alloc_chunk(yaffs_dev_t *dev, int useReserve,
+				yaffs_block_info_t **blockUsedPtr);
 
-static void yaffs_VerifyDirectory(yaffs_Object *directory);
-#ifdef YAFFS_PARANOID
-static int yaffs_CheckFileSanity(yaffs_Object *in);
-#else
-#define yaffs_CheckFileSanity(in)
-#endif
+static void yaffs_check_obj_details_loaded(yaffs_obj_t *in);
+
+static void yaffs_invalidate_whole_cache(yaffs_obj_t *in);
+static void yaffs_invalidate_chunk_cache(yaffs_obj_t *object, int chunk_id);
 
-static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in);
-static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId);
+static int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk,
+				yaffs_ext_tags *tags);
 
-static void yaffs_InvalidateCheckpoint(yaffs_Device *dev);
+static int yaffs_verify_chunk_written(yaffs_dev_t *dev,
+					int nand_chunk,
+					const __u8 *data,
+					yaffs_ext_tags *tags);
 
-static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode,
-				yaffs_ExtendedTags *tags);
 
-static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn,
-		unsigned pos);
-static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev,
-					yaffs_FileStructure *fStruct,
-					__u32 chunkId);
+static void yaffs_load_name_from_oh(yaffs_dev_t *dev,YCHAR *name, const YCHAR *ohName, int bufferSize);
+static void yaffs_load_oh_from_name(yaffs_dev_t *dev,YCHAR *ohName, const YCHAR *name);
 
 
 /* Function to calculate chunk and offset */
 
-static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, int *chunkOut,
+static void yaffs_addr_to_chunk(yaffs_dev_t *dev, loff_t addr, int *chunkOut,
 		__u32 *offsetOut)
 {
 	int chunk;
 	__u32 offset;
 
-	chunk  = (__u32)(addr >> dev->chunkShift);
+	chunk  = (__u32)(addr >> dev->chunk_shift);
 
-	if (dev->chunkDiv == 1) {
+	if (dev->chunk_div == 1) {
 		/* easy power of 2 case */
-		offset = (__u32)(addr & dev->chunkMask);
+		offset = (__u32)(addr & dev->chunk_mask);
 	} else {
 		/* Non power-of-2 case */
 
 		loff_t chunkBase;
 
-		chunk /= dev->chunkDiv;
+		chunk /= dev->chunk_div;
 
-		chunkBase = ((loff_t)chunk) * dev->nDataBytesPerChunk;
+		chunkBase = ((loff_t)chunk) * dev->data_bytes_per_chunk;
 		offset = (__u32)(addr - chunkBase);
 	}
 
@@ -172,7 +160,7 @@ static __u32 ShiftsGE(__u32 x)
 
 static __u32 Shifts(__u32 x)
 {
-	int nShifts;
+	__u32 nShifts;
 
 	nShifts =  0;
 
@@ -193,49 +181,49 @@ static __u32 Shifts(__u32 x)
  * Temporary buffer manipulations.
  */
 
-static int yaffs_InitialiseTempBuffers(yaffs_Device *dev)
+static int yaffs_init_tmp_buffers(yaffs_dev_t *dev)
 {
 	int i;
 	__u8 *buf = (__u8 *)1;
 
-	memset(dev->tempBuffer, 0, sizeof(dev->tempBuffer));
+	memset(dev->temp_buffer, 0, sizeof(dev->temp_buffer));
 
 	for (i = 0; buf && i < YAFFS_N_TEMP_BUFFERS; i++) {
-		dev->tempBuffer[i].line = 0;	/* not in use */
-		dev->tempBuffer[i].buffer = buf =
-		    YMALLOC_DMA(dev->totalBytesPerChunk);
+		dev->temp_buffer[i].line = 0;	/* not in use */
+		dev->temp_buffer[i].buffer = buf =
+		    YMALLOC_DMA(dev->param.total_bytes_per_chunk);
 	}
 
 	return buf ? YAFFS_OK : YAFFS_FAIL;
 }
 
-__u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo)
+__u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no)
 {
 	int i, j;
 
-	dev->tempInUse++;
-	if (dev->tempInUse > dev->maxTemp)
-		dev->maxTemp = dev->tempInUse;
+	dev->temp_in_use++;
+	if (dev->temp_in_use > dev->max_temp)
+		dev->max_temp = dev->temp_in_use;
 
 	for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
-		if (dev->tempBuffer[i].line == 0) {
-			dev->tempBuffer[i].line = lineNo;
-			if ((i + 1) > dev->maxTemp) {
-				dev->maxTemp = i + 1;
+		if (dev->temp_buffer[i].line == 0) {
+			dev->temp_buffer[i].line = line_no;
+			if ((i + 1) > dev->max_temp) {
+				dev->max_temp = i + 1;
 				for (j = 0; j <= i; j++)
-					dev->tempBuffer[j].maxLine =
-					    dev->tempBuffer[j].line;
+					dev->temp_buffer[j].max_line =
+					    dev->temp_buffer[j].line;
 			}
 
-			return dev->tempBuffer[i].buffer;
+			return dev->temp_buffer[i].buffer;
 		}
 	}
 
 	T(YAFFS_TRACE_BUFFERS,
 	  (TSTR("Out of temp buffers at line %d, other held by lines:"),
-	   lineNo));
+	   line_no));
 	for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++)
-		T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->tempBuffer[i].line));
+		T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->temp_buffer[i].line));
 
 	T(YAFFS_TRACE_BUFFERS, (TSTR(" " TENDSTR)));
 
@@ -244,21 +232,21 @@ __u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo)
 	 * This is not good.
 	 */
 
-	dev->unmanagedTempAllocations++;
-	return YMALLOC(dev->nDataBytesPerChunk);
+	dev->unmanaged_buffer_allocs++;
+	return YMALLOC(dev->data_bytes_per_chunk);
 
 }
 
-void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer,
-				    int lineNo)
+void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer,
+				    int line_no)
 {
 	int i;
 
-	dev->tempInUse--;
+	dev->temp_in_use--;
 
 	for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
-		if (dev->tempBuffer[i].buffer == buffer) {
-			dev->tempBuffer[i].line = 0;
+		if (dev->temp_buffer[i].buffer == buffer) {
+			dev->temp_buffer[i].line = 0;
 			return;
 		}
 	}
@@ -267,9 +255,9 @@ void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer,
 		/* assume it is an unmanaged one. */
 		T(YAFFS_TRACE_BUFFERS,
 		  (TSTR("Releasing unmanaged temp buffer in line %d" TENDSTR),
-		   lineNo));
+		   line_no));
 		YFREE(buffer);
-		dev->unmanagedTempDeallocations++;
+		dev->unmanaged_buffer_deallocs++;
 	}
 
 }
@@ -277,21 +265,21 @@ void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer,
 /*
  * Determine if we have a managed buffer.
  */
-int yaffs_IsManagedTempBuffer(yaffs_Device *dev, const __u8 *buffer)
+int yaffs_is_managed_tmp_buffer(yaffs_dev_t *dev, const __u8 *buffer)
 {
 	int i;
 
 	for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
-		if (dev->tempBuffer[i].buffer == buffer)
+		if (dev->temp_buffer[i].buffer == buffer)
 			return 1;
 	}
 
-	for (i = 0; i < dev->nShortOpCaches; i++) {
-		if (dev->srCache[i].data == buffer)
+	for (i = 0; i < dev->param.n_caches; i++) {
+		if (dev->cache[i].data == buffer)
 			return 1;
 	}
 
-	if (buffer == dev->checkpointBuffer)
+	if (buffer == dev->checkpt_buffer)
 		return 1;
 
 	T(YAFFS_TRACE_ALWAYS,
@@ -299,564 +287,18 @@ int yaffs_IsManagedTempBuffer(yaffs_Device *dev, const __u8 *buffer)
 	return 0;
 }
 
-
-
-/*
- * Chunk bitmap manipulations
- */
-
-static Y_INLINE __u8 *yaffs_BlockBits(yaffs_Device *dev, int blk)
-{
-	if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) {
-		T(YAFFS_TRACE_ERROR,
-			(TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR),
-			blk));
-		YBUG();
-	}
-	return dev->chunkBits +
-		(dev->chunkBitmapStride * (blk - dev->internalStartBlock));
-}
-
-static Y_INLINE void yaffs_VerifyChunkBitId(yaffs_Device *dev, int blk, int chunk)
-{
-	if (blk < dev->internalStartBlock || blk > dev->internalEndBlock ||
-			chunk < 0 || chunk >= dev->nChunksPerBlock) {
-		T(YAFFS_TRACE_ERROR,
-		(TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR),
-			blk, chunk));
-		YBUG();
-	}
-}
-
-static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device *dev, int blk)
-{
-	__u8 *blkBits = yaffs_BlockBits(dev, blk);
-
-	memset(blkBits, 0, dev->chunkBitmapStride);
-}
-
-static Y_INLINE void yaffs_ClearChunkBit(yaffs_Device *dev, int blk, int chunk)
-{
-	__u8 *blkBits = yaffs_BlockBits(dev, blk);
-
-	yaffs_VerifyChunkBitId(dev, blk, chunk);
-
-	blkBits[chunk / 8] &= ~(1 << (chunk & 7));
-}
-
-static Y_INLINE void yaffs_SetChunkBit(yaffs_Device *dev, int blk, int chunk)
-{
-	__u8 *blkBits = yaffs_BlockBits(dev, blk);
-
-	yaffs_VerifyChunkBitId(dev, blk, chunk);
-
-	blkBits[chunk / 8] |= (1 << (chunk & 7));
-}
-
-static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device *dev, int blk, int chunk)
-{
-	__u8 *blkBits = yaffs_BlockBits(dev, blk);
-	yaffs_VerifyChunkBitId(dev, blk, chunk);
-
-	return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0;
-}
-
-static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device *dev, int blk)
-{
-	__u8 *blkBits = yaffs_BlockBits(dev, blk);
-	int i;
-	for (i = 0; i < dev->chunkBitmapStride; i++) {
-		if (*blkBits)
-			return 1;
-		blkBits++;
-	}
-	return 0;
-}
-
-static int yaffs_CountChunkBits(yaffs_Device *dev, int blk)
-{
-	__u8 *blkBits = yaffs_BlockBits(dev, blk);
-	int i;
-	int n = 0;
-	for (i = 0; i < dev->chunkBitmapStride; i++) {
-		__u8 x = *blkBits;
-		while (x) {
-			if (x & 1)
-				n++;
-			x >>= 1;
-		}
-
-		blkBits++;
-	}
-	return n;
-}
-
 /*
  * Verification code
  */
 
-static int yaffs_SkipVerification(yaffs_Device *dev)
-{
-	return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL));
-}
-
-static int yaffs_SkipFullVerification(yaffs_Device *dev)
-{
-	return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_FULL));
-}
-
-static int yaffs_SkipNANDVerification(yaffs_Device *dev)
-{
-	return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_NAND));
-}
-
-static const char *blockStateName[] = {
-"Unknown",
-"Needs scanning",
-"Scanning",
-"Empty",
-"Allocating",
-"Full",
-"Dirty",
-"Checkpoint",
-"Collecting",
-"Dead"
-};
-
-static void yaffs_VerifyBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, int n)
-{
-	int actuallyUsed;
-	int inUse;
-
-	if (yaffs_SkipVerification(dev))
-		return;
-
-	/* Report illegal runtime states */
-	if (bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES)
-		T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has undefined state %d"TENDSTR), n, bi->blockState));
-
-	switch (bi->blockState) {
-	case YAFFS_BLOCK_STATE_UNKNOWN:
-	case YAFFS_BLOCK_STATE_SCANNING:
-	case YAFFS_BLOCK_STATE_NEEDS_SCANNING:
-		T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has bad run-state %s"TENDSTR),
-		n, blockStateName[bi->blockState]));
-	}
-
-	/* Check pages in use and soft deletions are legal */
-
-	actuallyUsed = bi->pagesInUse - bi->softDeletions;
-
-	if (bi->pagesInUse < 0 || bi->pagesInUse > dev->nChunksPerBlock ||
-	   bi->softDeletions < 0 || bi->softDeletions > dev->nChunksPerBlock ||
-	   actuallyUsed < 0 || actuallyUsed > dev->nChunksPerBlock)
-		T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR),
-		n, bi->pagesInUse, bi->softDeletions));
-
-
-	/* Check chunk bitmap legal */
-	inUse = yaffs_CountChunkBits(dev, n);
-	if (inUse != bi->pagesInUse)
-		T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR),
-			n, bi->pagesInUse, inUse));
-
-	/* Check that the sequence number is valid.
-	 * Ten million is legal, but is very unlikely
-	 */
-	if (dev->isYaffs2 &&
-	   (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || bi->blockState == YAFFS_BLOCK_STATE_FULL) &&
-	   (bi->sequenceNumber < YAFFS_LOWEST_SEQUENCE_NUMBER || bi->sequenceNumber > 10000000))
-		T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has suspect sequence number of %d"TENDSTR),
-		n, bi->sequenceNumber));
-}
-
-static void yaffs_VerifyCollectedBlock(yaffs_Device *dev, yaffs_BlockInfo *bi,
-		int n)
-{
-	yaffs_VerifyBlock(dev, bi, n);
-
-	/* After collection the block should be in the erased state */
-	/* This will need to change if we do partial gc */
-
-	if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING &&
-			bi->blockState != YAFFS_BLOCK_STATE_EMPTY) {
-		T(YAFFS_TRACE_ERROR, (TSTR("Block %d is in state %d after gc, should be erased"TENDSTR),
-			n, bi->blockState));
-	}
-}
-
-static void yaffs_VerifyBlocks(yaffs_Device *dev)
-{
-	int i;
-	int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES];
-	int nIllegalBlockStates = 0;
-
-	if (yaffs_SkipVerification(dev))
-		return;
-
-	memset(nBlocksPerState, 0, sizeof(nBlocksPerState));
-
-	for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
-		yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i);
-		yaffs_VerifyBlock(dev, bi, i);
-
-		if (bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES)
-			nBlocksPerState[bi->blockState]++;
-		else
-			nIllegalBlockStates++;
-	}
-
-	T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR)));
-	T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR)));
-
-	T(YAFFS_TRACE_VERIFY, (TSTR("%d blocks have illegal states"TENDSTR), nIllegalBlockStates));
-	if (nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1)
-		T(YAFFS_TRACE_VERIFY, (TSTR("Too many allocating blocks"TENDSTR)));
-
-	for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++)
-		T(YAFFS_TRACE_VERIFY,
-		  (TSTR("%s %d blocks"TENDSTR),
-		  blockStateName[i], nBlocksPerState[i]));
-
-	if (dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])
-		T(YAFFS_TRACE_VERIFY,
-		 (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR),
-		 dev->blocksInCheckpoint, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]));
-
-	if (dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])
-		T(YAFFS_TRACE_VERIFY,
-		 (TSTR("Erased block count wrong dev %d count %d"TENDSTR),
-		 dev->nErasedBlocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]));
-
-	if (nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1)
-		T(YAFFS_TRACE_VERIFY,
-		 (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR),
-		 nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING]));
-
-	T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR)));
-
-}
-
-/*
- * Verify the object header. oh must be valid, but obj and tags may be NULL in which
- * case those tests will not be performed.
- */
-static void yaffs_VerifyObjectHeader(yaffs_Object *obj, yaffs_ObjectHeader *oh, yaffs_ExtendedTags *tags, int parentCheck)
-{
-	if (obj && yaffs_SkipVerification(obj->myDev))
-		return;
-
-	if (!(tags && obj && oh)) {
-		T(YAFFS_TRACE_VERIFY,
-				(TSTR("Verifying object header tags %x obj %x oh %x"TENDSTR),
-				(__u32)tags, (__u32)obj, (__u32)oh));
-		return;
-	}
-
-	if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN ||
-			oh->type > YAFFS_OBJECT_TYPE_MAX)
-		T(YAFFS_TRACE_VERIFY,
-			(TSTR("Obj %d header type is illegal value 0x%x"TENDSTR),
-			tags->objectId, oh->type));
-
-	if (tags->objectId != obj->objectId)
-		T(YAFFS_TRACE_VERIFY,
-			(TSTR("Obj %d header mismatch objectId %d"TENDSTR),
-			tags->objectId, obj->objectId));
-
-
-	/*
-	 * Check that the object's parent ids match if parentCheck requested.
-	 *
-	 * Tests do not apply to the root object.
-	 */
-
-	if (parentCheck && tags->objectId > 1 && !obj->parent)
-		T(YAFFS_TRACE_VERIFY,
-			(TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR),
-			tags->objectId, oh->parentObjectId));
-
-	if (parentCheck && obj->parent &&
-			oh->parentObjectId != obj->parent->objectId &&
-			(oh->parentObjectId != YAFFS_OBJECTID_UNLINKED ||
-			obj->parent->objectId != YAFFS_OBJECTID_DELETED))
-		T(YAFFS_TRACE_VERIFY,
-			(TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR),
-			tags->objectId, oh->parentObjectId, obj->parent->objectId));
-
-	if (tags->objectId > 1 && oh->name[0] == 0) /* Null name */
-		T(YAFFS_TRACE_VERIFY,
-			(TSTR("Obj %d header name is NULL"TENDSTR),
-			obj->objectId));
-
-	if (tags->objectId > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */
-		T(YAFFS_TRACE_VERIFY,
-			(TSTR("Obj %d header name is 0xFF"TENDSTR),
-			obj->objectId));
-}
-
-
-
-static int yaffs_VerifyTnodeWorker(yaffs_Object *obj, yaffs_Tnode *tn,
-					__u32 level, int chunkOffset)
-{
-	int i;
-	yaffs_Device *dev = obj->myDev;
-	int ok = 1;
-
-	if (tn) {
-		if (level > 0) {
-
-			for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) {
-				if (tn->internal[i]) {
-					ok = yaffs_VerifyTnodeWorker(obj,
-							tn->internal[i],
-							level - 1,
-							(chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i);
-				}
-			}
-		} else if (level == 0) {
-			yaffs_ExtendedTags tags;
-			__u32 objectId = obj->objectId;
-
-			chunkOffset <<=  YAFFS_TNODES_LEVEL0_BITS;
-
-			for (i = 0; i < YAFFS_NTNODES_LEVEL0; i++) {
-				__u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
-
-				if (theChunk > 0) {
-					/* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.objectId,tags.chunkId,theChunk)); */
-					yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags);
-					if (tags.objectId != objectId || tags.chunkId != chunkOffset) {
-						T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
-							objectId, chunkOffset, theChunk,
-							tags.objectId, tags.chunkId));
-					}
-				}
-				chunkOffset++;
-			}
-		}
-	}
-
-	return ok;
-
-}
-
-
-static void yaffs_VerifyFile(yaffs_Object *obj)
-{
-	int requiredTallness;
-	int actualTallness;
-	__u32 lastChunk;
-	__u32 x;
-	__u32 i;
-	yaffs_Device *dev;
-	yaffs_ExtendedTags tags;
-	yaffs_Tnode *tn;
-	__u32 objectId;
-
-	if (!obj)
-		return;
-
-	if (yaffs_SkipVerification(obj->myDev))
-		return;
-
-	dev = obj->myDev;
-	objectId = obj->objectId;
-
-	/* Check file size is consistent with tnode depth */
-	lastChunk =  obj->variant.fileVariant.fileSize / dev->nDataBytesPerChunk + 1;
-	x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS;
-	requiredTallness = 0;
-	while (x > 0) {
-		x >>= YAFFS_TNODES_INTERNAL_BITS;
-		requiredTallness++;
-	}
-
-	actualTallness = obj->variant.fileVariant.topLevel;
-
-	if (requiredTallness > actualTallness)
-		T(YAFFS_TRACE_VERIFY,
-		(TSTR("Obj %d had tnode tallness %d, needs to be %d"TENDSTR),
-		 obj->objectId, actualTallness, requiredTallness));
-
-
-	/* Check that the chunks in the tnode tree are all correct.
-	 * We do this by scanning through the tnode tree and
-	 * checking the tags for every chunk match.
-	 */
-
-	if (yaffs_SkipNANDVerification(dev))
-		return;
-
-	for (i = 1; i <= lastChunk; i++) {
-		tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant, i);
-
-		if (tn) {
-			__u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
-			if (theChunk > 0) {
-				/* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),objectId,i,theChunk)); */
-				yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags);
-				if (tags.objectId != objectId || tags.chunkId != i) {
-					T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
-						objectId, i, theChunk,
-						tags.objectId, tags.chunkId));
-				}
-			}
-		}
-	}
-}
-
-
-static void yaffs_VerifyHardLink(yaffs_Object *obj)
-{
-	if (obj && yaffs_SkipVerification(obj->myDev))
-		return;
-
-	/* Verify sane equivalent object */
-}
-
-static void yaffs_VerifySymlink(yaffs_Object *obj)
-{
-	if (obj && yaffs_SkipVerification(obj->myDev))
-		return;
-
-	/* Verify symlink string */
-}
-
-static void yaffs_VerifySpecial(yaffs_Object *obj)
-{
-	if (obj && yaffs_SkipVerification(obj->myDev))
-		return;
-}
-
-static void yaffs_VerifyObject(yaffs_Object *obj)
-{
-	yaffs_Device *dev;
-
-	__u32 chunkMin;
-	__u32 chunkMax;
-
-	__u32 chunkIdOk;
-	__u32 chunkInRange;
-	__u32 chunkShouldNotBeDeleted;
-	__u32 chunkValid;
-
-	if (!obj)
-		return;
-
-	if (obj->beingCreated)
-		return;
-
-	dev = obj->myDev;
-
-	if (yaffs_SkipVerification(dev))
-		return;
-
-	/* Check sane object header chunk */
-
-	chunkMin = dev->internalStartBlock * dev->nChunksPerBlock;
-	chunkMax = (dev->internalEndBlock+1) * dev->nChunksPerBlock - 1;
-
-	chunkInRange = (((unsigned)(obj->hdrChunk)) >= chunkMin && ((unsigned)(obj->hdrChunk)) <= chunkMax);
-	chunkIdOk = chunkInRange || obj->hdrChunk == 0;
-	chunkValid = chunkInRange &&
-			yaffs_CheckChunkBit(dev,
-					obj->hdrChunk / dev->nChunksPerBlock,
-					obj->hdrChunk % dev->nChunksPerBlock);
-	chunkShouldNotBeDeleted = chunkInRange && !chunkValid;
-
-	if (!obj->fake &&
-			(!chunkIdOk || chunkShouldNotBeDeleted)) {
-		T(YAFFS_TRACE_VERIFY,
-			(TSTR("Obj %d has chunkId %d %s %s"TENDSTR),
-			obj->objectId, obj->hdrChunk,
-			chunkIdOk ? "" : ",out of range",
-			chunkShouldNotBeDeleted ? ",marked as deleted" : ""));
-	}
-
-	if (chunkValid && !yaffs_SkipNANDVerification(dev)) {
-		yaffs_ExtendedTags tags;
-		yaffs_ObjectHeader *oh;
-		__u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
-
-		oh = (yaffs_ObjectHeader *)buffer;
-
-		yaffs_ReadChunkWithTagsFromNAND(dev, obj->hdrChunk, buffer,
-				&tags);
-
-		yaffs_VerifyObjectHeader(obj, oh, &tags, 1);
-
-		yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
-	}
-
-	/* Verify it has a parent */
-	if (obj && !obj->fake &&
-			(!obj->parent || obj->parent->myDev != dev)) {
-		T(YAFFS_TRACE_VERIFY,
-			(TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR),
-			obj->objectId, obj->parent));
-	}
-
-	/* Verify parent is a directory */
-	if (obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
-		T(YAFFS_TRACE_VERIFY,
-			(TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR),
-			obj->objectId, obj->parent->variantType));
-	}
-
-	switch (obj->variantType) {
-	case YAFFS_OBJECT_TYPE_FILE:
-		yaffs_VerifyFile(obj);
-		break;
-	case YAFFS_OBJECT_TYPE_SYMLINK:
-		yaffs_VerifySymlink(obj);
-		break;
-	case YAFFS_OBJECT_TYPE_DIRECTORY:
-		yaffs_VerifyDirectory(obj);
-		break;
-	case YAFFS_OBJECT_TYPE_HARDLINK:
-		yaffs_VerifyHardLink(obj);
-		break;
-	case YAFFS_OBJECT_TYPE_SPECIAL:
-		yaffs_VerifySpecial(obj);
-		break;
-	case YAFFS_OBJECT_TYPE_UNKNOWN:
-	default:
-		T(YAFFS_TRACE_VERIFY,
-		(TSTR("Obj %d has illegaltype %d"TENDSTR),
-		obj->objectId, obj->variantType));
-		break;
-	}
-}
-
-static void yaffs_VerifyObjects(yaffs_Device *dev)
-{
-	yaffs_Object *obj;
-	int i;
-	struct ylist_head *lh;
-
-	if (yaffs_SkipVerification(dev))
-		return;
 
-	/* Iterate through the objects in each hash entry */
-
-	for (i = 0; i <  YAFFS_NOBJECT_BUCKETS; i++) {
-		ylist_for_each(lh, &dev->objectBucket[i].list) {
-			if (lh) {
-				obj = ylist_entry(lh, yaffs_Object, hashLink);
-				yaffs_VerifyObject(obj);
-			}
-		}
-	}
-}
 
 
 /*
  *  Simple hash function. Needs to have a reasonable spread
  */
 
-static Y_INLINE int yaffs_HashFunction(int n)
+static Y_INLINE int yaffs_hash_fn(int n)
 {
 	n = abs(n);
 	return n % YAFFS_NOBJECT_BUCKETS;
@@ -867,14 +309,14 @@ static Y_INLINE int yaffs_HashFunction(int n)
  * Note that root might have a presence in NAND if permissions are set.
  */
 
-yaffs_Object *yaffs_Root(yaffs_Device *dev)
+yaffs_obj_t *yaffs_root(yaffs_dev_t *dev)
 {
-	return dev->rootDir;
+	return dev->root_dir;
 }
 
-yaffs_Object *yaffs_LostNFound(yaffs_Device *dev)
+yaffs_obj_t *yaffs_lost_n_found(yaffs_dev_t *dev)
 {
-	return dev->lostNFoundDir;
+	return dev->lost_n_found;
 }
 
 
@@ -882,10 +324,10 @@ yaffs_Object *yaffs_LostNFound(yaffs_Device *dev)
  *  Erased NAND checking functions
  */
 
-int yaffs_CheckFF(__u8 *buffer, int nBytes)
+int yaffs_check_ff(__u8 *buffer, int n_bytes)
 {
 	/* Horrible, slow implementation */
-	while (nBytes--) {
+	while (n_bytes--) {
 		if (*buffer != 0xFF)
 			return 0;
 		buffer++;
@@ -893,47 +335,70 @@ int yaffs_CheckFF(__u8 *buffer, int nBytes)
 	return 1;
 }
 
-static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
-				int chunkInNAND)
+static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev,
+				int nand_chunk)
 {
 	int retval = YAFFS_OK;
-	__u8 *data = yaffs_GetTempBuffer(dev, __LINE__);
-	yaffs_ExtendedTags tags;
+	__u8 *data = yaffs_get_temp_buffer(dev, __LINE__);
+	yaffs_ext_tags tags;
 	int result;
 
-	result = yaffs_ReadChunkWithTagsFromNAND(dev, chunkInNAND, data, &tags);
+	result = yaffs_rd_chunk_tags_nand(dev, nand_chunk, data, &tags);
 
-	if (tags.eccResult > YAFFS_ECC_RESULT_NO_ERROR)
+	if (tags.ecc_result > YAFFS_ECC_RESULT_NO_ERROR)
 		retval = YAFFS_FAIL;
 
-	if (!yaffs_CheckFF(data, dev->nDataBytesPerChunk) || tags.chunkUsed) {
+	if (!yaffs_check_ff(data, dev->data_bytes_per_chunk) || tags.chunk_used) {
 		T(YAFFS_TRACE_NANDACCESS,
-		  (TSTR("Chunk %d not erased" TENDSTR), chunkInNAND));
+		  (TSTR("Chunk %d not erased" TENDSTR), nand_chunk));
 		retval = YAFFS_FAIL;
 	}
 
-	yaffs_ReleaseTempBuffer(dev, data, __LINE__);
+	yaffs_release_temp_buffer(dev, data, __LINE__);
 
 	return retval;
 
 }
 
-static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev,
+
+static int yaffs_verify_chunk_written(yaffs_dev_t *dev,
+					int nand_chunk,
 					const __u8 *data,
-					yaffs_ExtendedTags *tags,
+					yaffs_ext_tags *tags)
+{
+	int retval = YAFFS_OK;
+	yaffs_ext_tags tempTags;
+	__u8 *buffer = yaffs_get_temp_buffer(dev,__LINE__);
+	int result;
+	
+	result = yaffs_rd_chunk_tags_nand(dev,nand_chunk,buffer,&tempTags);
+	if(memcmp(buffer,data,dev->data_bytes_per_chunk) ||
+		tempTags.obj_id != tags->obj_id ||
+		tempTags.chunk_id  != tags->chunk_id ||
+		tempTags.n_bytes != tags->n_bytes)
+		retval = YAFFS_FAIL;
+
+	yaffs_release_temp_buffer(dev, buffer, __LINE__);
+
+	return retval;
+}
+
+static int yaffs_write_new_chunk(struct yaffs_dev_s *dev,
+					const __u8 *data,
+					yaffs_ext_tags *tags,
 					int useReserve)
 {
 	int attempts = 0;
 	int writeOk = 0;
 	int chunk;
 
-	yaffs_InvalidateCheckpoint(dev);
+	yaffs2_checkpt_invalidate(dev);
 
 	do {
-		yaffs_BlockInfo *bi = 0;
+		yaffs_block_info_t *bi = 0;
 		int erasedOk = 0;
 
-		chunk = yaffs_AllocateChunk(dev, useReserve, &bi);
+		chunk = yaffs_alloc_chunk(dev, useReserve, &bi);
 		if (chunk < 0) {
 			/* no space */
 			break;
@@ -957,42 +422,51 @@ static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev,
 		 * chunk due to power loss.  This checking policy should
 		 * catch that case with very few checks and thus save a
 		 * lot of checks that are most likely not needed.
+		 *
+		 * Mods to the above
+		 * If an erase check fails or the write fails we skip the 
+		 * rest of the block.
 		 */
-		if (bi->gcPrioritise) {
-			yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
-			/* try another chunk */
-			continue;
-		}
 
 		/* let's give it a try */
 		attempts++;
 
-#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED
-		bi->skipErasedCheck = 0;
-#endif
-		if (!bi->skipErasedCheck) {
-			erasedOk = yaffs_CheckChunkErased(dev, chunk);
+		if(dev->param.always_check_erased)
+			bi->skip_erased_check = 0;
+
+		if (!bi->skip_erased_check) {
+			erasedOk = yaffs_check_chunk_erased(dev, chunk);
 			if (erasedOk != YAFFS_OK) {
 				T(YAFFS_TRACE_ERROR,
 				(TSTR("**>> yaffs chunk %d was not erased"
 				TENDSTR), chunk));
 
-				/* try another chunk */
+				/* If not erased, delete this one,
+				 * skip rest of block and
+				 * try another chunk */
+				 yaffs_chunk_del(dev,chunk,1,__LINE__);
+				 yaffs_skip_rest_of_block(dev);
 				continue;
 			}
-			bi->skipErasedCheck = 1;
 		}
 
-		writeOk = yaffs_WriteChunkWithTagsToNAND(dev, chunk,
+		writeOk = yaffs_wr_chunk_tags_nand(dev, chunk,
 				data, tags);
+
+		if(!bi->skip_erased_check)
+			writeOk = yaffs_verify_chunk_written(dev, chunk, data, tags);
+
 		if (writeOk != YAFFS_OK) {
-			yaffs_HandleWriteChunkError(dev, chunk, erasedOk);
-			/* try another chunk */
+			/* Clean up aborted write, skip to next block and
+			 * try another chunk */
+			yaffs_handle_chunk_wr_error(dev, chunk, erasedOk);
 			continue;
 		}
 
+		bi->skip_erased_check = 1;
+
 		/* Copy the data into the robustification buffer */
-		yaffs_HandleWriteChunkOk(dev, chunk, data, tags);
+		yaffs_handle_chunk_wr_ok(dev, chunk, data, tags);
 
 	} while (writeOk != YAFFS_OK &&
 		(yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts));
@@ -1005,51 +479,55 @@ static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev,
 			(TSTR("**>> yaffs write required %d attempts" TENDSTR),
 			attempts));
 
-		dev->nRetriedWrites += (attempts - 1);
+		dev->n_retired_writes += (attempts - 1);
 	}
 
 	return chunk;
 }
 
+
+ 
 /*
  * Block retiring for handling a broken block.
  */
 
-static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND)
+static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block)
 {
-	yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND);
+	yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block);
 
-	yaffs_InvalidateCheckpoint(dev);
+	yaffs2_checkpt_invalidate(dev);
+	
+	yaffs2_clear_oldest_dirty_seq(dev,bi);
 
-	if (yaffs_MarkBlockBad(dev, blockInNAND) != YAFFS_OK) {
-		if (yaffs_EraseBlockInNAND(dev, blockInNAND) != YAFFS_OK) {
+	if (yaffs_mark_bad(dev, flash_block) != YAFFS_OK) {
+		if (yaffs_erase_block(dev, flash_block) != YAFFS_OK) {
 			T(YAFFS_TRACE_ALWAYS, (TSTR(
 				"yaffs: Failed to mark bad and erase block %d"
-				TENDSTR), blockInNAND));
+				TENDSTR), flash_block));
 		} else {
-			yaffs_ExtendedTags tags;
-			int chunkId = blockInNAND * dev->nChunksPerBlock;
+			yaffs_ext_tags tags;
+			int chunk_id = flash_block * dev->param.chunks_per_block;
 
-			__u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
+			__u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__);
 
-			memset(buffer, 0xff, dev->nDataBytesPerChunk);
-			yaffs_InitialiseTags(&tags);
-			tags.sequenceNumber = YAFFS_SEQUENCE_BAD_BLOCK;
-			if (dev->writeChunkWithTagsToNAND(dev, chunkId -
-				dev->chunkOffset, buffer, &tags) != YAFFS_OK)
+			memset(buffer, 0xff, dev->data_bytes_per_chunk);
+			yaffs_init_tags(&tags);
+			tags.seq_number = YAFFS_SEQUENCE_BAD_BLOCK;
+			if (dev->param.write_chunk_tags_fn(dev, chunk_id -
+				dev->chunk_offset, buffer, &tags) != YAFFS_OK)
 				T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Failed to "
 					TCONT("write bad block marker to block %d")
-					TENDSTR), blockInNAND));
+					TENDSTR), flash_block));
 
-			yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
+			yaffs_release_temp_buffer(dev, buffer, __LINE__);
 		}
 	}
 
-	bi->blockState = YAFFS_BLOCK_STATE_DEAD;
-	bi->gcPrioritise = 0;
-	bi->needsRetiring = 0;
+	bi->block_state = YAFFS_BLOCK_STATE_DEAD;
+	bi->gc_prioritise = 0;
+	bi->needs_retiring = 0;
 
-	dev->nRetiredBlocks++;
+	dev->n_retired_blocks++;
 }
 
 /*
@@ -1057,55 +535,63 @@ static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND)
  *
  */
 
-static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
+static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk,
 				const __u8 *data,
-				const yaffs_ExtendedTags *tags)
+				const yaffs_ext_tags *tags)
 {
+	dev=dev;
+	nand_chunk=nand_chunk;
+	data=data;
+	tags=tags;
 }
 
-static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
-				const yaffs_ExtendedTags *tags)
+static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk,
+				const yaffs_ext_tags *tags)
 {
+	dev=dev;
+	nand_chunk=nand_chunk;
+	tags=tags;
 }
 
-void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi)
+void yaffs_handle_chunk_error(yaffs_dev_t *dev, yaffs_block_info_t *bi)
 {
-	if (!bi->gcPrioritise) {
-		bi->gcPrioritise = 1;
-		dev->hasPendingPrioritisedGCs = 1;
-		bi->chunkErrorStrikes++;
+	if (!bi->gc_prioritise) {
+		bi->gc_prioritise = 1;
+		dev->has_pending_prioritised_gc = 1;
+		bi->chunk_error_strikes++;
 
-		if (bi->chunkErrorStrikes > 3) {
-			bi->needsRetiring = 1; /* Too many stikes, so retire this */
+		if (bi->chunk_error_strikes > 3) {
+			bi->needs_retiring = 1; /* Too many stikes, so retire this */
 			T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR)));
 
 		}
 	}
 }
 
-static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND,
+static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk,
 		int erasedOk)
 {
-	int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
-	yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND);
+	int flash_block = nand_chunk / dev->param.chunks_per_block;
+	yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block);
 
-	yaffs_HandleChunkError(dev, bi);
+	yaffs_handle_chunk_error(dev, bi);
 
 	if (erasedOk) {
 		/* Was an actual write failure, so mark the block for retirement  */
-		bi->needsRetiring = 1;
+		bi->needs_retiring = 1;
 		T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
-		  (TSTR("**>> Block %d needs retiring" TENDSTR), blockInNAND));
+		  (TSTR("**>> Block %d needs retiring" TENDSTR), flash_block));
 	}
 
 	/* Delete the chunk */
-	yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__);
+	yaffs_chunk_del(dev, nand_chunk, 1, __LINE__);
+	yaffs_skip_rest_of_block(dev);
 }
 
 
 /*---------------- Name handling functions ------------*/
 
-static __u16 yaffs_CalcNameSum(const YCHAR *name)
+static __u16 yaffs_calc_name_sum(const YCHAR *name)
 {
 	__u16 sum = 0;
 	__u16 i = 1;
@@ -1126,16 +612,28 @@ static __u16 yaffs_CalcNameSum(const YCHAR *name)
 	return sum;
 }
 
-static void yaffs_SetObjectName(yaffs_Object *obj, const YCHAR *name)
+void yaffs_set_obj_name(yaffs_obj_t *obj, const YCHAR *name)
 {
 #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
-	memset(obj->shortName, 0, sizeof(YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1));
-	if (name && yaffs_strlen(name) <= YAFFS_SHORT_NAME_LENGTH)
-		yaffs_strcpy(obj->shortName, name);
+	memset(obj->short_name, 0, sizeof(YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1));
+	if (name && yaffs_strnlen(name,YAFFS_SHORT_NAME_LENGTH+1) <= YAFFS_SHORT_NAME_LENGTH)
+		yaffs_strcpy(obj->short_name, name);
 	else
-		obj->shortName[0] = _Y('\0');
+		obj->short_name[0] = _Y('\0');
+#endif
+	obj->sum = yaffs_calc_name_sum(name);
+}
+
+void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh)
+{
+#ifdef CONFIG_YAFFS_AUTO_UNICODE
+	YCHAR tmpName[YAFFS_MAX_NAME_LENGTH+1];
+	memset(tmpName,0,sizeof(tmpName));
+	yaffs_load_name_from_oh(obj->my_dev,tmpName,oh->name,YAFFS_MAX_NAME_LENGTH+1);
+	yaffs_set_obj_name(obj,tmpName);
+#else
+	yaffs_set_obj_name(obj,oh->name);
 #endif
-	obj->sum = yaffs_CalcNameSum(name);
 }
 
 /*-------------------- TNODES -------------------
@@ -1145,185 +643,37 @@ static void yaffs_SetObjectName(yaffs_Object *obj, const YCHAR *name)
  * in the tnode.
  */
 
-/* yaffs_CreateTnodes creates a bunch more tnodes and
- * adds them to the tnode free list.
- * Don't use this function directly
- */
 
-static int yaffs_CreateTnodes(yaffs_Device *dev, int nTnodes)
+yaffs_tnode_t *yaffs_get_tnode(yaffs_dev_t *dev)
 {
-	int i;
-	int tnodeSize;
-	yaffs_Tnode *newTnodes;
-	__u8 *mem;
-	yaffs_Tnode *curr;
-	yaffs_Tnode *next;
-	yaffs_TnodeList *tnl;
-
-	if (nTnodes < 1)
-		return YAFFS_OK;
-
-	/* Calculate the tnode size in bytes for variable width tnode support.
-	 * Must be a multiple of 32-bits  */
-	tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
-
-	if (tnodeSize < sizeof(yaffs_Tnode))
-		tnodeSize = sizeof(yaffs_Tnode);
-
-	/* make these things */
-
-	newTnodes = YMALLOC(nTnodes * tnodeSize);
-	mem = (__u8 *)newTnodes;
-
-	if (!newTnodes) {
-		T(YAFFS_TRACE_ERROR,
-			(TSTR("yaffs: Could not allocate Tnodes" TENDSTR)));
-		return YAFFS_FAIL;
+	yaffs_tnode_t *tn = yaffs_alloc_raw_tnode(dev);
+	if (tn){
+		memset(tn, 0, dev->tnode_size);
+		dev->n_tnodes++;
 	}
 
-	/* Hook them into the free list */
-#if 0
-	for (i = 0; i < nTnodes - 1; i++) {
-		newTnodes[i].internal[0] = &newTnodes[i + 1];
-#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
-		newTnodes[i].internal[YAFFS_NTNODES_INTERNAL] = (void *)1;
-#endif
-	}
-
-	newTnodes[nTnodes - 1].internal[0] = dev->freeTnodes;
-#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
-	newTnodes[nTnodes - 1].internal[YAFFS_NTNODES_INTERNAL] = (void *)1;
-#endif
-	dev->freeTnodes = newTnodes;
-#else
-	/* New hookup for wide tnodes */
-	for (i = 0; i < nTnodes - 1; i++) {
-		curr = (yaffs_Tnode *) &mem[i * tnodeSize];
-		next = (yaffs_Tnode *) &mem[(i+1) * tnodeSize];
-		curr->internal[0] = next;
-	}
-
-	curr = (yaffs_Tnode *) &mem[(nTnodes - 1) * tnodeSize];
-	curr->internal[0] = dev->freeTnodes;
-	dev->freeTnodes = (yaffs_Tnode *)mem;
-
-#endif
-
-
-	dev->nFreeTnodes += nTnodes;
-	dev->nTnodesCreated += nTnodes;
-
-	/* Now add this bunch of tnodes to a list for freeing up.
-	 * NB If we can't add this to the management list it isn't fatal
-	 * but it just means we can't free this bunch of tnodes later.
-	 */
-
-	tnl = YMALLOC(sizeof(yaffs_TnodeList));
-	if (!tnl) {
-		T(YAFFS_TRACE_ERROR,
-		  (TSTR
-		   ("yaffs: Could not add tnodes to management list" TENDSTR)));
-		   return YAFFS_FAIL;
-	} else {
-		tnl->tnodes = newTnodes;
-		tnl->next = dev->allocatedTnodeList;
-		dev->allocatedTnodeList = tnl;
-	}
-
-	T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR)));
-
-	return YAFFS_OK;
-}
-
-/* GetTnode gets us a clean tnode. Tries to make allocate more if we run out */
-
-static yaffs_Tnode *yaffs_GetTnodeRaw(yaffs_Device *dev)
-{
-	yaffs_Tnode *tn = NULL;
-
-	/* If there are none left make more */
-	if (!dev->freeTnodes)
-		yaffs_CreateTnodes(dev, YAFFS_ALLOCATION_NTNODES);
-
-	if (dev->freeTnodes) {
-		tn = dev->freeTnodes;
-#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
-		if (tn->internal[YAFFS_NTNODES_INTERNAL] != (void *)1) {
-			/* Hoosterman, this thing looks like it isn't in the list */
-			T(YAFFS_TRACE_ALWAYS,
-			  (TSTR("yaffs: Tnode list bug 1" TENDSTR)));
-		}
-#endif
-		dev->freeTnodes = dev->freeTnodes->internal[0];
-		dev->nFreeTnodes--;
-	}
-
-	dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
-
-	return tn;
-}
-
-static yaffs_Tnode *yaffs_GetTnode(yaffs_Device *dev)
-{
-	yaffs_Tnode *tn = yaffs_GetTnodeRaw(dev);
-	int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
-
-	if (tnodeSize < sizeof(yaffs_Tnode))
-		tnodeSize = sizeof(yaffs_Tnode);
-
-	if (tn)
-		memset(tn, 0, tnodeSize);
+	dev->checkpoint_blocks_required = 0; /* force recalculation*/
 
 	return tn;
 }
 
 /* FreeTnode frees up a tnode and puts it back on the free list */
-static void yaffs_FreeTnode(yaffs_Device *dev, yaffs_Tnode *tn)
+static void yaffs_free_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn)
 {
-	if (tn) {
-#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
-		if (tn->internal[YAFFS_NTNODES_INTERNAL] != 0) {
-			/* Hoosterman, this thing looks like it is already in the list */
-			T(YAFFS_TRACE_ALWAYS,
-			  (TSTR("yaffs: Tnode list bug 2" TENDSTR)));
-		}
-		tn->internal[YAFFS_NTNODES_INTERNAL] = (void *)1;
-#endif
-		tn->internal[0] = dev->freeTnodes;
-		dev->freeTnodes = tn;
-		dev->nFreeTnodes++;
-	}
-	dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
-}
-
-static void yaffs_DeinitialiseTnodes(yaffs_Device *dev)
-{
-	/* Free the list of allocated tnodes */
-	yaffs_TnodeList *tmp;
-
-	while (dev->allocatedTnodeList) {
-		tmp = dev->allocatedTnodeList->next;
-
-		YFREE(dev->allocatedTnodeList->tnodes);
-		YFREE(dev->allocatedTnodeList);
-		dev->allocatedTnodeList = tmp;
-
-	}
-
-	dev->freeTnodes = NULL;
-	dev->nFreeTnodes = 0;
+	yaffs_free_raw_tnode(dev,tn);
+	dev->n_tnodes--;
+	dev->checkpoint_blocks_required = 0; /* force recalculation*/
 }
 
-static void yaffs_InitialiseTnodes(yaffs_Device *dev)
+static void yaffs_deinit_tnodes_and_objs(yaffs_dev_t *dev)
 {
-	dev->allocatedTnodeList = NULL;
-	dev->freeTnodes = NULL;
-	dev->nFreeTnodes = 0;
-	dev->nTnodesCreated = 0;
+	yaffs_deinit_raw_tnodes_and_objs(dev);
+	dev->n_obj = 0;
+	dev->n_tnodes = 0;
 }
 
 
-void yaffs_PutLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos,
+void yaffs_load_tnode_0(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos,
 		unsigned val)
 {
 	__u32 *map = (__u32 *)tn;
@@ -1333,27 +683,27 @@ void yaffs_PutLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos,
 	__u32 mask;
 
 	pos &= YAFFS_TNODES_LEVEL0_MASK;
-	val >>= dev->chunkGroupBits;
+	val >>= dev->chunk_grp_bits;
 
-	bitInMap = pos * dev->tnodeWidth;
+	bitInMap = pos * dev->tnode_width;
 	wordInMap = bitInMap / 32;
 	bitInWord = bitInMap & (32 - 1);
 
-	mask = dev->tnodeMask << bitInWord;
+	mask = dev->tnode_mask << bitInWord;
 
 	map[wordInMap] &= ~mask;
 	map[wordInMap] |= (mask & (val << bitInWord));
 
-	if (dev->tnodeWidth > (32 - bitInWord)) {
+	if (dev->tnode_width > (32 - bitInWord)) {
 		bitInWord = (32 - bitInWord);
 		wordInMap++;;
-		mask = dev->tnodeMask >> (/*dev->tnodeWidth -*/ bitInWord);
+		mask = dev->tnode_mask >> (/*dev->tnode_width -*/ bitInWord);
 		map[wordInMap] &= ~mask;
 		map[wordInMap] |= (mask & (val >> bitInWord));
 	}
 }
 
-static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn,
+__u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn,
 		unsigned pos)
 {
 	__u32 *map = (__u32 *)tn;
@@ -1364,20 +714,20 @@ static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn,
 
 	pos &= YAFFS_TNODES_LEVEL0_MASK;
 
-	bitInMap = pos * dev->tnodeWidth;
+	bitInMap = pos * dev->tnode_width;
 	wordInMap = bitInMap / 32;
 	bitInWord = bitInMap & (32 - 1);
 
 	val = map[wordInMap] >> bitInWord;
 
-	if	(dev->tnodeWidth > (32 - bitInWord)) {
+	if	(dev->tnode_width > (32 - bitInWord)) {
 		bitInWord = (32 - bitInWord);
 		wordInMap++;;
 		val |= (map[wordInMap] << bitInWord);
 	}
 
-	val &= dev->tnodeMask;
-	val <<= dev->chunkGroupBits;
+	val &= dev->tnode_mask;
+	val <<= dev->chunk_grp_bits;
 
 	return val;
 }
@@ -1385,42 +735,44 @@ static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn,
 /* ------------------- End of individual tnode manipulation -----------------*/
 
 /* ---------Functions to manipulate the look-up tree (made up of tnodes) ------
- * The look up tree is represented by the top tnode and the number of topLevel
+ * The look up tree is represented by the top tnode and the number of top_level
  * in the tree. 0 means only the level 0 tnode is in the tree.
  */
 
 /* FindLevel0Tnode finds the level 0 tnode, if one exists. */
-static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev,
-					yaffs_FileStructure *fStruct,
-					__u32 chunkId)
+yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev,
+					yaffs_file_s *file_struct,
+					__u32 chunk_id)
 {
-	yaffs_Tnode *tn = fStruct->top;
+	yaffs_tnode_t *tn = file_struct->top;
 	__u32 i;
 	int requiredTallness;
-	int level = fStruct->topLevel;
+	int level = file_struct->top_level;
+
+	dev=dev;
 
 	/* Check sane level and chunk Id */
 	if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL)
 		return NULL;
 
-	if (chunkId > YAFFS_MAX_CHUNK_ID)
+	if (chunk_id > YAFFS_MAX_CHUNK_ID)
 		return NULL;
 
-	/* First check we're tall enough (ie enough topLevel) */
+	/* First check we're tall enough (ie enough top_level) */
 
-	i = chunkId >> YAFFS_TNODES_LEVEL0_BITS;
+	i = chunk_id >> YAFFS_TNODES_LEVEL0_BITS;
 	requiredTallness = 0;
 	while (i) {
 		i >>= YAFFS_TNODES_INTERNAL_BITS;
 		requiredTallness++;
 	}
 
-	if (requiredTallness > fStruct->topLevel)
+	if (requiredTallness > file_struct->top_level)
 		return NULL; /* Not tall enough, so we can't find it */
 
 	/* Traverse down to level 0 */
 	while (level > 0 && tn) {
-		tn = tn->internal[(chunkId >>
+		tn = tn->internal[(chunk_id >>
 			(YAFFS_TNODES_LEVEL0_BITS +
 				(level - 1) *
 				YAFFS_TNODES_INTERNAL_BITS)) &
@@ -1442,29 +794,29 @@ static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev,
  *  be plugged into the ttree.
  */
 
-static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev,
-					yaffs_FileStructure *fStruct,
-					__u32 chunkId,
-					yaffs_Tnode *passedTn)
+yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev,
+					yaffs_file_s *file_struct,
+					__u32 chunk_id,
+					yaffs_tnode_t *passed_tn)
 {
 	int requiredTallness;
 	int i;
 	int l;
-	yaffs_Tnode *tn;
+	yaffs_tnode_t *tn;
 
 	__u32 x;
 
 
 	/* Check sane level and page Id */
-	if (fStruct->topLevel < 0 || fStruct->topLevel > YAFFS_TNODES_MAX_LEVEL)
+	if (file_struct->top_level < 0 || file_struct->top_level > YAFFS_TNODES_MAX_LEVEL)
 		return NULL;
 
-	if (chunkId > YAFFS_MAX_CHUNK_ID)
+	if (chunk_id > YAFFS_MAX_CHUNK_ID)
 		return NULL;
 
-	/* First check we're tall enough (ie enough topLevel) */
+	/* First check we're tall enough (ie enough top_level) */
 
-	x = chunkId >> YAFFS_TNODES_LEVEL0_BITS;
+	x = chunk_id >> YAFFS_TNODES_LEVEL0_BITS;
 	requiredTallness = 0;
 	while (x) {
 		x >>= YAFFS_TNODES_INTERNAL_BITS;
@@ -1472,32 +824,32 @@ static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev,
 	}
 
 
-	if (requiredTallness > fStruct->topLevel) {
+	if (requiredTallness > file_struct->top_level) {
 		/* Not tall enough, gotta make the tree taller */
-		for (i = fStruct->topLevel; i < requiredTallness; i++) {
+		for (i = file_struct->top_level; i < requiredTallness; i++) {
 
-			tn = yaffs_GetTnode(dev);
+			tn = yaffs_get_tnode(dev);
 
 			if (tn) {
-				tn->internal[0] = fStruct->top;
-				fStruct->top = tn;
+				tn->internal[0] = file_struct->top;
+				file_struct->top = tn;
+				file_struct->top_level++;
 			} else {
 				T(YAFFS_TRACE_ERROR,
-				  (TSTR("yaffs: no more tnodes" TENDSTR)));
+					(TSTR("yaffs: no more tnodes" TENDSTR)));
+				return NULL;
 			}
 		}
-
-		fStruct->topLevel = requiredTallness;
 	}
 
 	/* Traverse down to level 0, adding anything we need */
 
-	l = fStruct->topLevel;
-	tn = fStruct->top;
+	l = file_struct->top_level;
+	tn = file_struct->top;
 
 	if (l > 0) {
 		while (l > 0 && tn) {
-			x = (chunkId >>
+			x = (chunk_id >>
 			     (YAFFS_TNODES_LEVEL0_BITS +
 			      (l - 1) * YAFFS_TNODES_INTERNAL_BITS)) &
 			    YAFFS_TNODES_INTERNAL_MASK;
@@ -1505,19 +857,22 @@ static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev,
 
 			if ((l > 1) && !tn->internal[x]) {
 				/* Add missing non-level-zero tnode */
-				tn->internal[x] = yaffs_GetTnode(dev);
-
+				tn->internal[x] = yaffs_get_tnode(dev);
+				if(!tn->internal[x])
+					return NULL;
 			} else if (l == 1) {
 				/* Looking from level 1 at level 0 */
-				if (passedTn) {
+				if (passed_tn) {
 					/* If we already have one, then release it.*/
 					if (tn->internal[x])
-						yaffs_FreeTnode(dev, tn->internal[x]);
-					tn->internal[x] = passedTn;
+						yaffs_free_tnode(dev, tn->internal[x]);
+					tn->internal[x] = passed_tn;
 
 				} else if (!tn->internal[x]) {
 					/* Don't have one, none passed in */
-					tn->internal[x] = yaffs_GetTnode(dev);
+					tn->internal[x] = yaffs_get_tnode(dev);
+					if(!tn->internal[x])
+						return NULL;
 				}
 			}
 
@@ -1526,29 +881,34 @@ static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev,
 		}
 	} else {
 		/* top is level 0 */
-		if (passedTn) {
-			memcpy(tn, passedTn, (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
-			yaffs_FreeTnode(dev, passedTn);
+		if (passed_tn) {
+			memcpy(tn, passed_tn, (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8);
+			yaffs_free_tnode(dev, passed_tn);
 		}
 	}
 
 	return tn;
 }
 
-static int yaffs_FindChunkInGroup(yaffs_Device *dev, int theChunk,
-				yaffs_ExtendedTags *tags, int objectId,
-				int chunkInInode)
+static int yaffs_find_chunk_in_group(yaffs_dev_t *dev, int theChunk,
+				yaffs_ext_tags *tags, int obj_id,
+				int inode_chunk)
 {
 	int j;
 
-	for (j = 0; theChunk && j < dev->chunkGroupSize; j++) {
-		if (yaffs_CheckChunkBit(dev, theChunk / dev->nChunksPerBlock,
-				theChunk % dev->nChunksPerBlock)) {
-			yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL,
-							tags);
-			if (yaffs_TagsMatch(tags, objectId, chunkInInode)) {
-				/* found it; */
+	for (j = 0; theChunk && j < dev->chunk_grp_size; j++) {
+		if (yaffs_check_chunk_bit(dev, theChunk / dev->param.chunks_per_block,
+				theChunk % dev->param.chunks_per_block)) {
+			
+			if(dev->chunk_grp_size == 1)
 				return theChunk;
+			else {
+				yaffs_rd_chunk_tags_nand(dev, theChunk, NULL,
+								tags);
+				if (yaffs_tags_match(tags, obj_id, inode_chunk)) {
+					/* found it; */
+					return theChunk;
+				}
 			}
 		}
 		theChunk++;
@@ -1556,22 +916,23 @@ static int yaffs_FindChunkInGroup(yaffs_Device *dev, int theChunk,
 	return -1;
 }
 
-
+#if 0
+/* Experimental code not being used yet. Might speed up file deletion */
 /* DeleteWorker scans backwards through the tnode tree and deletes all the
- * chunks and tnodes in the file
+ * chunks and tnodes in the file.
  * Returns 1 if the tree was deleted.
  * Returns 0 if it stopped early due to hitting the limit and the delete is incomplete.
  */
 
-static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level,
-			      int chunkOffset, int *limit)
+static int yaffs_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, __u32 level,
+			      int chunk_offset, int *limit)
 {
 	int i;
-	int chunkInInode;
+	int inode_chunk;
 	int theChunk;
-	yaffs_ExtendedTags tags;
+	yaffs_ext_tags tags;
 	int foundChunk;
-	yaffs_Device *dev = in->myDev;
+	yaffs_dev_t *dev = in->my_dev;
 
 	int allDone = 1;
 
@@ -1584,20 +945,20 @@ static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level,
 						allDone = 0;
 					} else {
 						allDone =
-							yaffs_DeleteWorker(in,
+							yaffs_del_worker(in,
 								tn->
 								internal
 								[i],
 								level -
 								1,
-								(chunkOffset
+								(chunk_offset
 									<<
 									YAFFS_TNODES_INTERNAL_BITS)
 								+ i,
 								limit);
 					}
 					if (allDone) {
-						yaffs_FreeTnode(dev,
+						yaffs_free_tnode(dev,
 								tn->
 								internal[i]);
 						tn->internal[i] = NULL;
@@ -1610,24 +971,24 @@ static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level,
 
 			for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hitLimit;
 					i--) {
-				theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
+				theChunk = yaffs_get_group_base(dev, tn, i);
 				if (theChunk) {
 
-					chunkInInode = (chunkOffset <<
+					inode_chunk = (chunk_offset <<
 						YAFFS_TNODES_LEVEL0_BITS) + i;
 
 					foundChunk =
-						yaffs_FindChunkInGroup(dev,
+						yaffs_find_chunk_in_group(dev,
 								theChunk,
 								&tags,
-								in->objectId,
-								chunkInInode);
+								in->obj_id,
+								inode_chunk);
 
 					if (foundChunk > 0) {
-						yaffs_DeleteChunk(dev,
+						yaffs_chunk_del(dev,
 								  foundChunk, 1,
 								  __LINE__);
-						in->nDataChunks--;
+						in->n_data_chunks--;
 						if (limit) {
 							*limit = *limit - 1;
 							if (*limit <= 0)
@@ -1636,7 +997,7 @@ static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level,
 
 					}
 
-					yaffs_PutLevel0Tnode(dev, tn, i, 0);
+					yaffs_load_tnode_0(dev, tn, i, 0);
 				}
 
 			}
@@ -1650,16 +1011,21 @@ static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level,
 
 }
 
-static void yaffs_SoftDeleteChunk(yaffs_Device *dev, int chunk)
+#endif
+
+static void yaffs_soft_del_chunk(yaffs_dev_t *dev, int chunk)
 {
-	yaffs_BlockInfo *theBlock;
+	yaffs_block_info_t *theBlock;
+	unsigned block_no;
 
 	T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk));
 
-	theBlock = yaffs_GetBlockInfo(dev, chunk / dev->nChunksPerBlock);
+	block_no =  chunk / dev->param.chunks_per_block;
+	theBlock = yaffs_get_block_info(dev, block_no);
 	if (theBlock) {
-		theBlock->softDeletions++;
-		dev->nFreeChunks++;
+		theBlock->soft_del_pages++;
+		dev->n_free_chunks++;
+		yaffs2_update_oldest_dirty_seq(dev, block_no, theBlock);
 	}
 }
 
@@ -1669,13 +1035,13 @@ static void yaffs_SoftDeleteChunk(yaffs_Device *dev, int chunk)
  * Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted.
  */
 
-static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn,
-				  __u32 level, int chunkOffset)
+static int yaffs_soft_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn,
+				  __u32 level, int chunk_offset)
 {
 	int i;
 	int theChunk;
 	int allDone = 1;
-	yaffs_Device *dev = in->myDev;
+	yaffs_dev_t *dev = in->my_dev;
 
 	if (tn) {
 		if (level > 0) {
@@ -1684,16 +1050,16 @@ static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn,
 			     i--) {
 				if (tn->internal[i]) {
 					allDone =
-					    yaffs_SoftDeleteWorker(in,
+					    yaffs_soft_del_worker(in,
 								   tn->
 								   internal[i],
 								   level - 1,
-								   (chunkOffset
+								   (chunk_offset
 								    <<
 								    YAFFS_TNODES_INTERNAL_BITS)
 								   + i);
 					if (allDone) {
-						yaffs_FreeTnode(dev,
+						yaffs_free_tnode(dev,
 								tn->
 								internal[i]);
 						tn->internal[i] = NULL;
@@ -1706,14 +1072,14 @@ static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn,
 		} else if (level == 0) {
 
 			for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) {
-				theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
+				theChunk = yaffs_get_group_base(dev, tn, i);
 				if (theChunk) {
 					/* Note this does not find the real chunk, only the chunk group.
 					 * We make an assumption that a chunk group is not larger than
 					 * a block.
 					 */
-					yaffs_SoftDeleteChunk(dev, theChunk);
-					yaffs_PutLevel0Tnode(dev, tn, i, 0);
+					yaffs_soft_del_chunk(dev, theChunk);
+					yaffs_load_tnode_0(dev, tn, i, 0);
 				}
 
 			}
@@ -1727,25 +1093,25 @@ static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn,
 
 }
 
-static void yaffs_SoftDeleteFile(yaffs_Object *obj)
+static void yaffs_soft_del_file(yaffs_obj_t *obj)
 {
 	if (obj->deleted &&
-	    obj->variantType == YAFFS_OBJECT_TYPE_FILE && !obj->softDeleted) {
-		if (obj->nDataChunks <= 0) {
+	    obj->variant_type == YAFFS_OBJECT_TYPE_FILE && !obj->soft_del) {
+		if (obj->n_data_chunks <= 0) {
 			/* Empty file with no duplicate object headers, just delete it immediately */
-			yaffs_FreeTnode(obj->myDev,
-					obj->variant.fileVariant.top);
-			obj->variant.fileVariant.top = NULL;
+			yaffs_free_tnode(obj->my_dev,
+					obj->variant.file_variant.top);
+			obj->variant.file_variant.top = NULL;
 			T(YAFFS_TRACE_TRACING,
 			  (TSTR("yaffs: Deleting empty file %d" TENDSTR),
-			   obj->objectId));
-			yaffs_DoGenericObjectDeletion(obj);
+			   obj->obj_id));
+			yaffs_generic_obj_del(obj);
 		} else {
-			yaffs_SoftDeleteWorker(obj,
-					       obj->variant.fileVariant.top,
-					       obj->variant.fileVariant.
-					       topLevel, 0);
-			obj->softDeleted = 1;
+			yaffs_soft_del_worker(obj,
+					       obj->variant.file_variant.top,
+					       obj->variant.file_variant.
+					       top_level, 0);
+			obj->soft_del = 1;
 		}
 	}
 }
@@ -1759,9 +1125,13 @@ static void yaffs_SoftDeleteFile(yaffs_Object *obj)
  * level 0 tnode entries must be zeroed out.
  * Could also use this for file deletion, but that's probably better handled
  * by a special case.
+ *
+ * This function is recursive. For levels > 0 the function is called again on
+ * any sub-tree. For level == 0 we just check if the sub-tree has data.
+ * If there is no data in a subtree then it is pruned.
  */
 
-static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device *dev, yaffs_Tnode *tn,
+static yaffs_tnode_t *yaffs_prune_worker(yaffs_dev_t *dev, yaffs_tnode_t *tn,
 				__u32 level, int del0)
 {
 	int i;
@@ -1770,22 +1140,32 @@ static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device *dev, yaffs_Tnode *tn,
 	if (tn) {
 		hasData = 0;
 
-		for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) {
-			if (tn->internal[i] && level > 0) {
-				tn->internal[i] =
-				    yaffs_PruneWorker(dev, tn->internal[i],
-						      level - 1,
-						      (i == 0) ? del0 : 1);
+		if(level > 0){
+			for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) {
+				if (tn->internal[i]) {
+					tn->internal[i] =
+						yaffs_prune_worker(dev, tn->internal[i],
+							level - 1,
+							(i == 0) ? del0 : 1);
+				}
+
+				if (tn->internal[i])
+					hasData++;
 			}
+		} else {
+			int tnode_size_u32 = dev->tnode_size/sizeof(__u32);
+			__u32 *map = (__u32 *)tn;
 
-			if (tn->internal[i])
-				hasData++;
-		}
+                        for(i = 0; !hasData && i < tnode_size_u32; i++){
+                                if(map[i])
+                                        hasData++;
+                        }
+                }
 
 		if (hasData == 0 && del0) {
 			/* Free and return NULL */
 
-			yaffs_FreeTnode(dev, tn);
+			yaffs_free_tnode(dev, tn);
 			tn = NULL;
 		}
 
@@ -1795,17 +1175,17 @@ static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device *dev, yaffs_Tnode *tn,
 
 }
 
-static int yaffs_PruneFileStructure(yaffs_Device *dev,
-				yaffs_FileStructure *fStruct)
+static int yaffs_prune_tree(yaffs_dev_t *dev,
+				yaffs_file_s *file_struct)
 {
 	int i;
 	int hasData;
 	int done = 0;
-	yaffs_Tnode *tn;
+	yaffs_tnode_t *tn;
 
-	if (fStruct->topLevel > 0) {
-		fStruct->top =
-		    yaffs_PruneWorker(dev, fStruct->top, fStruct->topLevel, 0);
+	if (file_struct->top_level > 0) {
+		file_struct->top =
+		    yaffs_prune_worker(dev, file_struct->top, file_struct->top_level, 0);
 
 		/* Now we have a tree with all the non-zero branches NULL but the height
 		 * is the same as it was.
@@ -1814,8 +1194,8 @@ static int yaffs_PruneFileStructure(yaffs_Device *dev,
 		 * (ie all the non-zero are NULL)
 		 */
 
-		while (fStruct->topLevel && !done) {
-			tn = fStruct->top;
+		while (file_struct->top_level && !done) {
+			tn = file_struct->top;
 
 			hasData = 0;
 			for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) {
@@ -1824,9 +1204,9 @@ static int yaffs_PruneFileStructure(yaffs_Device *dev,
 			}
 
 			if (!hasData) {
-				fStruct->top = tn->internal[0];
-				fStruct->topLevel--;
-				yaffs_FreeTnode(dev, tn);
+				file_struct->top = tn->internal[0];
+				file_struct->top_level--;
+				yaffs_free_tnode(dev, tn);
 			} else {
 				done = 1;
 			}
@@ -1838,250 +1218,152 @@ static int yaffs_PruneFileStructure(yaffs_Device *dev,
 
 /*-------------------- End of File Structure functions.-------------------*/
 
-/* yaffs_CreateFreeObjects creates a bunch more objects and
- * adds them to the object free list.
- */
-static int yaffs_CreateFreeObjects(yaffs_Device *dev, int nObjects)
-{
-	int i;
-	yaffs_Object *newObjects;
-	yaffs_ObjectList *list;
-
-	if (nObjects < 1)
-		return YAFFS_OK;
-
-	/* make these things */
-	newObjects = YMALLOC(nObjects * sizeof(yaffs_Object));
-	list = YMALLOC(sizeof(yaffs_ObjectList));
-
-	if (!newObjects || !list) {
-		if (newObjects)
-			YFREE(newObjects);
-		if (list)
-			YFREE(list);
-		T(YAFFS_TRACE_ALLOCATE,
-		  (TSTR("yaffs: Could not allocate more objects" TENDSTR)));
-		return YAFFS_FAIL;
-	}
-
-	/* Hook them into the free list */
-	for (i = 0; i < nObjects - 1; i++) {
-		newObjects[i].siblings.next =
-				(struct ylist_head *)(&newObjects[i + 1]);
-	}
-
-	newObjects[nObjects - 1].siblings.next = (void *)dev->freeObjects;
-	dev->freeObjects = newObjects;
-	dev->nFreeObjects += nObjects;
-	dev->nObjectsCreated += nObjects;
-
-	/* Now add this bunch of Objects to a list for freeing up. */
-
-	list->objects = newObjects;
-	list->next = dev->allocatedObjectList;
-	dev->allocatedObjectList = list;
-
-	return YAFFS_OK;
-}
-
 
 /* AllocateEmptyObject gets us a clean Object. Tries to make allocate more if we run out */
-static yaffs_Object *yaffs_AllocateEmptyObject(yaffs_Device *dev)
+static yaffs_obj_t *yaffs_alloc_empty_obj(yaffs_dev_t *dev)
 {
-	yaffs_Object *tn = NULL;
+	yaffs_obj_t *obj = yaffs_alloc_raw_obj(dev);
 
-#ifdef VALGRIND_TEST
-	tn = YMALLOC(sizeof(yaffs_Object));
-#else
-	/* If there are none left make more */
-	if (!dev->freeObjects)
-		yaffs_CreateFreeObjects(dev, YAFFS_ALLOCATION_NOBJECTS);
+	if (obj) {
+		dev->n_obj++;
 
-	if (dev->freeObjects) {
-		tn = dev->freeObjects;
-		dev->freeObjects =
-			(yaffs_Object *) (dev->freeObjects->siblings.next);
-		dev->nFreeObjects--;
-	}
-#endif
-	if (tn) {
 		/* Now sweeten it up... */
 
-		memset(tn, 0, sizeof(yaffs_Object));
-		tn->beingCreated = 1;
+		memset(obj, 0, sizeof(yaffs_obj_t));
+		obj->being_created = 1;
 
-		tn->myDev = dev;
-		tn->hdrChunk = 0;
-		tn->variantType = YAFFS_OBJECT_TYPE_UNKNOWN;
-		YINIT_LIST_HEAD(&(tn->hardLinks));
-		YINIT_LIST_HEAD(&(tn->hashLink));
-		YINIT_LIST_HEAD(&tn->siblings);
+		obj->my_dev = dev;
+		obj->hdr_chunk = 0;
+		obj->variant_type = YAFFS_OBJECT_TYPE_UNKNOWN;
+		YINIT_LIST_HEAD(&(obj->hard_links));
+		YINIT_LIST_HEAD(&(obj->hash_link));
+		YINIT_LIST_HEAD(&obj->siblings);
 
 
 		/* Now make the directory sane */
-		if (dev->rootDir) {
-			tn->parent = dev->rootDir;
-			ylist_add(&(tn->siblings), &dev->rootDir->variant.directoryVariant.children);
+		if (dev->root_dir) {
+			obj->parent = dev->root_dir;
+			ylist_add(&(obj->siblings), &dev->root_dir->variant.dir_variant.children);
 		}
 
 		/* Add it to the lost and found directory.
 		 * NB Can't put root or lostNFound in lostNFound so
 		 * check if lostNFound exists first
 		 */
-		if (dev->lostNFoundDir)
-			yaffs_AddObjectToDirectory(dev->lostNFoundDir, tn);
+		if (dev->lost_n_found)
+			yaffs_add_obj_to_dir(dev->lost_n_found, obj);
 
-		tn->beingCreated = 0;
+		obj->being_created = 0;
 	}
 
-	dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
+	dev->checkpoint_blocks_required = 0; /* force recalculation*/
 
-	return tn;
+	return obj;
 }
 
-static yaffs_Object *yaffs_CreateFakeDirectory(yaffs_Device *dev, int number,
+static yaffs_obj_t *yaffs_create_fake_dir(yaffs_dev_t *dev, int number,
 					       __u32 mode)
 {
 
-	yaffs_Object *obj =
-	    yaffs_CreateNewObject(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY);
+	yaffs_obj_t *obj =
+	    yaffs_new_obj(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY);
 	if (obj) {
 		obj->fake = 1;		/* it is fake so it might have no NAND presence... */
-		obj->renameAllowed = 0;	/* ... and we're not allowed to rename it... */
-		obj->unlinkAllowed = 0;	/* ... or unlink it */
+		obj->rename_allowed = 0;	/* ... and we're not allowed to rename it... */
+		obj->unlink_allowed = 0;	/* ... or unlink it */
 		obj->deleted = 0;
 		obj->unlinked = 0;
 		obj->yst_mode = mode;
-		obj->myDev = dev;
-		obj->hdrChunk = 0;	/* Not a valid chunk. */
+		obj->my_dev = dev;
+		obj->hdr_chunk = 0;	/* Not a valid chunk. */
 	}
 
 	return obj;
 
 }
 
-static void yaffs_UnhashObject(yaffs_Object *tn)
+static void yaffs_unhash_obj(yaffs_obj_t *obj)
 {
 	int bucket;
-	yaffs_Device *dev = tn->myDev;
+	yaffs_dev_t *dev = obj->my_dev;
 
 	/* If it is still linked into the bucket list, free from the list */
-	if (!ylist_empty(&tn->hashLink)) {
-		ylist_del_init(&tn->hashLink);
-		bucket = yaffs_HashFunction(tn->objectId);
-		dev->objectBucket[bucket].count--;
+	if (!ylist_empty(&obj->hash_link)) {
+		ylist_del_init(&obj->hash_link);
+		bucket = yaffs_hash_fn(obj->obj_id);
+		dev->obj_bucket[bucket].count--;
 	}
 }
 
 /*  FreeObject frees up a Object and puts it back on the free list */
-static void yaffs_FreeObject(yaffs_Object *tn)
+static void yaffs_free_obj(yaffs_obj_t *obj)
 {
-	yaffs_Device *dev = tn->myDev;
+	yaffs_dev_t *dev = obj->my_dev;
 
-#ifdef __KERNEL__
-	T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), tn, tn->myInode));
-#endif
+	T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), obj, obj->my_inode));
 
-	if (tn->parent)
+	if (!obj)
+		YBUG();
+	if (obj->parent)
 		YBUG();
-	if (!ylist_empty(&tn->siblings))
+	if (!ylist_empty(&obj->siblings))
 		YBUG();
 
 
-#ifdef __KERNEL__
-	if (tn->myInode) {
+	if (obj->my_inode) {
 		/* We're still hooked up to a cached inode.
 		 * Don't delete now, but mark for later deletion
 		 */
-		tn->deferedFree = 1;
+		obj->defered_free = 1;
 		return;
 	}
-#endif
-
-	yaffs_UnhashObject(tn);
-
-#ifdef VALGRIND_TEST
-	YFREE(tn);
-#else
-	/* Link into the free list. */
-	tn->siblings.next = (struct ylist_head *)(dev->freeObjects);
-	dev->freeObjects = tn;
-	dev->nFreeObjects++;
-#endif
-	dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
-}
 
-#ifdef __KERNEL__
+	yaffs_unhash_obj(obj);
 
-void yaffs_HandleDeferedFree(yaffs_Object *obj)
-{
-	if (obj->deferedFree)
-		yaffs_FreeObject(obj);
+	yaffs_free_raw_obj(dev,obj);
+	dev->n_obj--;
+	dev->checkpoint_blocks_required = 0; /* force recalculation*/
 }
 
-#endif
 
-static void yaffs_DeinitialiseObjects(yaffs_Device *dev)
+void yaffs_handle_defered_free(yaffs_obj_t *obj)
 {
-	/* Free the list of allocated Objects */
-
-	yaffs_ObjectList *tmp;
-
-	while (dev->allocatedObjectList) {
-		tmp = dev->allocatedObjectList->next;
-		YFREE(dev->allocatedObjectList->objects);
-		YFREE(dev->allocatedObjectList);
-
-		dev->allocatedObjectList = tmp;
-	}
-
-	dev->freeObjects = NULL;
-	dev->nFreeObjects = 0;
+	if (obj->defered_free)
+		yaffs_free_obj(obj);
 }
 
-static void yaffs_InitialiseObjects(yaffs_Device *dev)
+static void yaffs_init_tnodes_and_objs(yaffs_dev_t *dev)
 {
 	int i;
 
-	dev->allocatedObjectList = NULL;
-	dev->freeObjects = NULL;
-	dev->nFreeObjects = 0;
+	dev->n_obj = 0;
+	dev->n_tnodes = 0;
+
+	yaffs_init_raw_tnodes_and_objs(dev);
 
 	for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
-		YINIT_LIST_HEAD(&dev->objectBucket[i].list);
-		dev->objectBucket[i].count = 0;
+		YINIT_LIST_HEAD(&dev->obj_bucket[i].list);
+		dev->obj_bucket[i].count = 0;
 	}
 }
 
-static int yaffs_FindNiceObjectBucket(yaffs_Device *dev)
+static int yaffs_find_nice_bucket(yaffs_dev_t *dev)
 {
-	static int x;
 	int i;
 	int l = 999;
 	int lowest = 999999;
 
-	/* First let's see if we can find one that's empty. */
-
-	for (i = 0; i < 10 && lowest > 0; i++) {
-		x++;
-		x %= YAFFS_NOBJECT_BUCKETS;
-		if (dev->objectBucket[x].count < lowest) {
-			lowest = dev->objectBucket[x].count;
-			l = x;
-		}
-
-	}
 
-	/* If we didn't find an empty list, then try
-	 * looking a bit further for a short one
+	/* Search for the shortest list or one that
+	 * isn't too long.
 	 */
 
-	for (i = 0; i < 10 && lowest > 3; i++) {
-		x++;
-		x %= YAFFS_NOBJECT_BUCKETS;
-		if (dev->objectBucket[x].count < lowest) {
-			lowest = dev->objectBucket[x].count;
-			l = x;
+	for (i = 0; i < 10 && lowest > 4; i++) {
+		dev->bucket_finder++;
+		dev->bucket_finder %= YAFFS_NOBJECT_BUCKETS;
+		if (dev->obj_bucket[dev->bucket_finder].count < lowest) {
+			lowest = dev->obj_bucket[dev->bucket_finder].count;
+			l = dev->bucket_finder;
 		}
 
 	}
@@ -2089,9 +1371,9 @@ static int yaffs_FindNiceObjectBucket(yaffs_Device *dev)
 	return l;
 }
 
-static int yaffs_CreateNewObjectNumber(yaffs_Device *dev)
+static int yaffs_new_obj_id(yaffs_dev_t *dev)
 {
-	int bucket = yaffs_FindNiceObjectBucket(dev);
+	int bucket = yaffs_find_nice_bucket(dev);
 
 	/* Now find an object value that has not already been taken
 	 * by scanning the list.
@@ -2102,16 +1384,16 @@ static int yaffs_CreateNewObjectNumber(yaffs_Device *dev)
 
 	__u32 n = (__u32) bucket;
 
-	/* yaffs_CheckObjectHashSanity();  */
+	/* yaffs_check_obj_hash_sane();  */
 
 	while (!found) {
 		found = 1;
 		n += YAFFS_NOBJECT_BUCKETS;
-		if (1 || dev->objectBucket[bucket].count > 0) {
-			ylist_for_each(i, &dev->objectBucket[bucket].list) {
+		if (1 || dev->obj_bucket[bucket].count > 0) {
+			ylist_for_each(i, &dev->obj_bucket[bucket].list) {
 				/* If there is already one in the list */
-				if (i && ylist_entry(i, yaffs_Object,
-						hashLink)->objectId == n) {
+				if (i && ylist_entry(i, yaffs_obj_t,
+						hash_link)->obj_id == n) {
 					found = 0;
 				}
 			}
@@ -2121,31 +1403,30 @@ static int yaffs_CreateNewObjectNumber(yaffs_Device *dev)
 	return n;
 }
 
-static void yaffs_HashObject(yaffs_Object *in)
+static void yaffs_hash_obj(yaffs_obj_t *in)
 {
-	int bucket = yaffs_HashFunction(in->objectId);
-	yaffs_Device *dev = in->myDev;
+	int bucket = yaffs_hash_fn(in->obj_id);
+	yaffs_dev_t *dev = in->my_dev;
 
-	ylist_add(&in->hashLink, &dev->objectBucket[bucket].list);
-	dev->objectBucket[bucket].count++;
+	ylist_add(&in->hash_link, &dev->obj_bucket[bucket].list);
+	dev->obj_bucket[bucket].count++;
 }
 
-yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number)
+yaffs_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number)
 {
-	int bucket = yaffs_HashFunction(number);
+	int bucket = yaffs_hash_fn(number);
 	struct ylist_head *i;
-	yaffs_Object *in;
+	yaffs_obj_t *in;
 
-	ylist_for_each(i, &dev->objectBucket[bucket].list) {
+	ylist_for_each(i, &dev->obj_bucket[bucket].list) {
 		/* Look if it is in the list */
 		if (i) {
-			in = ylist_entry(i, yaffs_Object, hashLink);
-			if (in->objectId == number) {
-#ifdef __KERNEL__
+			in = ylist_entry(i, yaffs_obj_t, hash_link);
+			if (in->obj_id == number) {
+
 				/* Don't tell the VFS about this one if it is defered free */
-				if (in->deferedFree)
+				if (in->defered_free)
 					return NULL;
-#endif
 
 				return in;
 			}
@@ -2155,36 +1436,38 @@ yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number)
 	return NULL;
 }
 
-yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number,
-				    yaffs_ObjectType type)
+yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number,
+				    yaffs_obj_type type)
 {
-	yaffs_Object *theObject;
-	yaffs_Tnode *tn = NULL;
+	yaffs_obj_t *theObject=NULL;
+	yaffs_tnode_t *tn = NULL;
 
 	if (number < 0)
-		number = yaffs_CreateNewObjectNumber(dev);
-
-	theObject = yaffs_AllocateEmptyObject(dev);
-	if (!theObject)
-		return NULL;
+		number = yaffs_new_obj_id(dev);
 
 	if (type == YAFFS_OBJECT_TYPE_FILE) {
-		tn = yaffs_GetTnode(dev);
-		if (!tn) {
-			yaffs_FreeObject(theObject);
+		tn = yaffs_get_tnode(dev);
+		if (!tn)
 			return NULL;
-		}
 	}
 
+	theObject = yaffs_alloc_empty_obj(dev);
+	if (!theObject){
+		if(tn)
+			yaffs_free_tnode(dev,tn);
+		return NULL;
+	}
+
+
 	if (theObject) {
 		theObject->fake = 0;
-		theObject->renameAllowed = 1;
-		theObject->unlinkAllowed = 1;
-		theObject->objectId = number;
-		yaffs_HashObject(theObject);
-		theObject->variantType = type;
+		theObject->rename_allowed = 1;
+		theObject->unlink_allowed = 1;
+		theObject->obj_id = number;
+		yaffs_hash_obj(theObject);
+		theObject->variant_type = type;
 #ifdef CONFIG_YAFFS_WINCE
-		yfsd_WinFileTimeNow(theObject->win_atime);
+		yfsd_win_file_time_now(theObject->win_atime);
 		theObject->win_ctime[0] = theObject->win_mtime[0] =
 		    theObject->win_atime[0];
 		theObject->win_ctime[1] = theObject->win_mtime[1] =
@@ -2197,15 +1480,17 @@ yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number,
 #endif
 		switch (type) {
 		case YAFFS_OBJECT_TYPE_FILE:
-			theObject->variant.fileVariant.fileSize = 0;
-			theObject->variant.fileVariant.scannedFileSize = 0;
-			theObject->variant.fileVariant.shrinkSize = 0xFFFFFFFF;	/* max __u32 */
-			theObject->variant.fileVariant.topLevel = 0;
-			theObject->variant.fileVariant.top = tn;
+			theObject->variant.file_variant.file_size = 0;
+			theObject->variant.file_variant.scanned_size = 0;
+			theObject->variant.file_variant.shrink_size = 0xFFFFFFFF;	/* max __u32 */
+			theObject->variant.file_variant.top_level = 0;
+			theObject->variant.file_variant.top = tn;
 			break;
 		case YAFFS_OBJECT_TYPE_DIRECTORY:
-			YINIT_LIST_HEAD(&theObject->variant.directoryVariant.
+			YINIT_LIST_HEAD(&theObject->variant.dir_variant.
 					children);
+			YINIT_LIST_HEAD(&theObject->variant.dir_variant.
+					dirty);
 			break;
 		case YAFFS_OBJECT_TYPE_SYMLINK:
 		case YAFFS_OBJECT_TYPE_HARDLINK:
@@ -2221,86 +1506,93 @@ yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number,
 	return theObject;
 }
 
-static yaffs_Object *yaffs_FindOrCreateObjectByNumber(yaffs_Device *dev,
-						      int number,
-						      yaffs_ObjectType type)
+yaffs_obj_t *yaffs_find_or_create_by_number(yaffs_dev_t *dev,
+						int number,
+						yaffs_obj_type type)
 {
-	yaffs_Object *theObject = NULL;
+	yaffs_obj_t *theObject = NULL;
 
 	if (number > 0)
-		theObject = yaffs_FindObjectByNumber(dev, number);
+		theObject = yaffs_find_by_number(dev, number);
 
 	if (!theObject)
-		theObject = yaffs_CreateNewObject(dev, number, type);
+		theObject = yaffs_new_obj(dev, number, type);
 
 	return theObject;
 
 }
 
 
-static YCHAR *yaffs_CloneString(const YCHAR *str)
+YCHAR *yaffs_clone_str(const YCHAR *str)
 {
 	YCHAR *newStr = NULL;
+	int len;
 
-	if (str && *str) {
-		newStr = YMALLOC((yaffs_strlen(str) + 1) * sizeof(YCHAR));
-		if (newStr)
-			yaffs_strcpy(newStr, str);
-	}
+	if (!str)
+		str = _Y("");
 
+	len = yaffs_strnlen(str,YAFFS_MAX_ALIAS_LENGTH);
+	newStr = YMALLOC((len + 1) * sizeof(YCHAR));
+	if (newStr){
+		yaffs_strncpy(newStr, str,len);
+		newStr[len] = 0;
+	}
 	return newStr;
 
 }
 
 /*
  * Mknod (create) a new object.
- * equivalentObject only has meaning for a hard link;
- * aliasString only has meaning for a sumlink.
+ * equiv_obj only has meaning for a hard link;
+ * aliasString only has meaning for a symlink.
  * rdev only has meaning for devices (a subset of special objects)
  */
 
-static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type,
-				       yaffs_Object *parent,
+static yaffs_obj_t *yaffs_create_obj(yaffs_obj_type type,
+				       yaffs_obj_t *parent,
 				       const YCHAR *name,
 				       __u32 mode,
 				       __u32 uid,
 				       __u32 gid,
-				       yaffs_Object *equivalentObject,
+				       yaffs_obj_t *equiv_obj,
 				       const YCHAR *aliasString, __u32 rdev)
 {
-	yaffs_Object *in;
+	yaffs_obj_t *in;
 	YCHAR *str = NULL;
 
-	yaffs_Device *dev = parent->myDev;
+	yaffs_dev_t *dev = parent->my_dev;
 
 	/* Check if the entry exists. If it does then fail the call since we don't want a dup.*/
-	if (yaffs_FindObjectByName(parent, name))
+	if (yaffs_find_by_name(parent, name))
 		return NULL;
 
-	in = yaffs_CreateNewObject(dev, -1, type);
-
-	if (!in)
-		return YAFFS_FAIL;
-
 	if (type == YAFFS_OBJECT_TYPE_SYMLINK) {
-		str = yaffs_CloneString(aliasString);
-		if (!str) {
-			yaffs_FreeObject(in);
+		str = yaffs_clone_str(aliasString);
+		if (!str)
 			return NULL;
-		}
+	}
+
+	in = yaffs_new_obj(dev, -1, type);
+
+	if (!in){
+		if(str)
+			YFREE(str);
+		return NULL;
 	}
 
 
 
+
+
 	if (in) {
-		in->hdrChunk = 0;
+		in->hdr_chunk = 0;
 		in->valid = 1;
-		in->variantType = type;
+		in->variant_type = type;
 
 		in->yst_mode = mode;
 
 #ifdef CONFIG_YAFFS_WINCE
-		yfsd_WinFileTimeNow(in->win_atime);
+		yfsd_win_file_time_now(in->win_atime);
 		in->win_ctime[0] = in->win_mtime[0] = in->win_atime[0];
 		in->win_ctime[1] = in->win_mtime[1] = in->win_atime[1];
 
@@ -2311,25 +1603,25 @@ static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type,
 		in->yst_uid = uid;
 		in->yst_gid = gid;
 #endif
-		in->nDataChunks = 0;
+		in->n_data_chunks = 0;
 
-		yaffs_SetObjectName(in, name);
+		yaffs_set_obj_name(in, name);
 		in->dirty = 1;
 
-		yaffs_AddObjectToDirectory(parent, in);
+		yaffs_add_obj_to_dir(parent, in);
 
-		in->myDev = parent->myDev;
+		in->my_dev = parent->my_dev;
 
 		switch (type) {
 		case YAFFS_OBJECT_TYPE_SYMLINK:
-			in->variant.symLinkVariant.alias = str;
+			in->variant.symlink_variant.alias = str;
 			break;
 		case YAFFS_OBJECT_TYPE_HARDLINK:
-			in->variant.hardLinkVariant.equivalentObject =
-				equivalentObject;
-			in->variant.hardLinkVariant.equivalentObjectId =
-				equivalentObject->objectId;
-			ylist_add(&in->hardLinks, &equivalentObject->hardLinks);
+			in->variant.hardlink_variant.equiv_obj =
+				equiv_obj;
+			in->variant.hardlink_variant.equiv_id =
+				equiv_obj->obj_id;
+			ylist_add(&in->hard_links, &equiv_obj->hard_links);
 			break;
 		case YAFFS_OBJECT_TYPE_FILE:
 		case YAFFS_OBJECT_TYPE_DIRECTORY:
@@ -2339,92 +1631,93 @@ static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type,
 			break;
 		}
 
-		if (yaffs_UpdateObjectHeader(in, name, 0, 0, 0) < 0) {
+		if (yaffs_update_oh(in, name, 0, 0, 0, NULL) < 0) {
 			/* Could not create the object header, fail the creation */
-			yaffs_DeleteObject(in);
+			yaffs_del_obj(in);
 			in = NULL;
 		}
 
+		yaffs_update_parent(parent);
 	}
 
 	return in;
 }
 
-yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name,
+yaffs_obj_t *yaffs_create_file(yaffs_obj_t *parent, const YCHAR *name,
 			__u32 mode, __u32 uid, __u32 gid)
 {
-	return yaffs_MknodObject(YAFFS_OBJECT_TYPE_FILE, parent, name, mode,
+	return yaffs_create_obj(YAFFS_OBJECT_TYPE_FILE, parent, name, mode,
 				uid, gid, NULL, NULL, 0);
 }
 
-yaffs_Object *yaffs_MknodDirectory(yaffs_Object *parent, const YCHAR *name,
+yaffs_obj_t *yaffs_create_dir(yaffs_obj_t *parent, const YCHAR *name,
 				__u32 mode, __u32 uid, __u32 gid)
 {
-	return yaffs_MknodObject(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name,
+	return yaffs_create_obj(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name,
 				 mode, uid, gid, NULL, NULL, 0);
 }
 
-yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name,
+yaffs_obj_t *yaffs_create_special(yaffs_obj_t *parent, const YCHAR *name,
 				__u32 mode, __u32 uid, __u32 gid, __u32 rdev)
 {
-	return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode,
+	return yaffs_create_obj(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode,
 				 uid, gid, NULL, NULL, rdev);
 }
 
-yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name,
+yaffs_obj_t *yaffs_create_symlink(yaffs_obj_t *parent, const YCHAR *name,
 				__u32 mode, __u32 uid, __u32 gid,
 				const YCHAR *alias)
 {
-	return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode,
+	return yaffs_create_obj(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode,
 				uid, gid, NULL, alias, 0);
 }
 
-/* yaffs_Link returns the object id of the equivalent object.*/
-yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name,
-			yaffs_Object *equivalentObject)
+/* yaffs_link_obj returns the object id of the equivalent object.*/
+yaffs_obj_t *yaffs_link_obj(yaffs_obj_t *parent, const YCHAR *name,
+			yaffs_obj_t *equiv_obj)
 {
 	/* Get the real object in case we were fed a hard link as an equivalent object */
-	equivalentObject = yaffs_GetEquivalentObject(equivalentObject);
+	equiv_obj = yaffs_get_equivalent_obj(equiv_obj);
 
-	if (yaffs_MknodObject
+	if (yaffs_create_obj
 	    (YAFFS_OBJECT_TYPE_HARDLINK, parent, name, 0, 0, 0,
-	     equivalentObject, NULL, 0)) {
-		return equivalentObject;
+	     equiv_obj, NULL, 0)) {
+		return equiv_obj;
 	} else {
 		return NULL;
 	}
 
 }
 
-static int yaffs_ChangeObjectName(yaffs_Object *obj, yaffs_Object *newDir,
-				const YCHAR *newName, int force, int shadows)
+static int yaffs_change_obj_name(yaffs_obj_t *obj, yaffs_obj_t *new_dir,
+				const YCHAR *new_name, int force, int shadows)
 {
 	int unlinkOp;
 	int deleteOp;
 
-	yaffs_Object *existingTarget;
+	yaffs_obj_t *existingTarget;
 
-	if (newDir == NULL)
-		newDir = obj->parent;	/* use the old directory */
+	if (new_dir == NULL)
+		new_dir = obj->parent;	/* use the old directory */
 
-	if (newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+	if (new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
 		T(YAFFS_TRACE_ALWAYS,
 		  (TSTR
-		   ("tragedy: yaffs_ChangeObjectName: newDir is not a directory"
+		   ("tragedy: yaffs_change_obj_name: new_dir is not a directory"
 		    TENDSTR)));
 		YBUG();
 	}
 
 	/* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */
-	if (obj->myDev->isYaffs2)
-		unlinkOp = (newDir == obj->myDev->unlinkedDir);
+	if (obj->my_dev->param.is_yaffs2)
+		unlinkOp = (new_dir == obj->my_dev->unlinked_dir);
 	else
-		unlinkOp = (newDir == obj->myDev->unlinkedDir
-			    && obj->variantType == YAFFS_OBJECT_TYPE_FILE);
+		unlinkOp = (new_dir == obj->my_dev->unlinked_dir
+			    && obj->variant_type == YAFFS_OBJECT_TYPE_FILE);
 
-	deleteOp = (newDir == obj->myDev->deletedDir);
+	deleteOp = (new_dir == obj->my_dev->del_dir);
 
-	existingTarget = yaffs_FindObjectByName(newDir, newName);
+	existingTarget = yaffs_find_by_name(new_dir, new_name);
 
 	/* If the object is a file going into the unlinked directory,
 	 *   then it is OK to just stuff it in since duplicate names are allowed.
@@ -2436,276 +1729,152 @@ static int yaffs_ChangeObjectName(yaffs_Object *obj, yaffs_Object *newDir,
 	     force ||
 	     (shadows > 0) ||
 	     !existingTarget) &&
-	    newDir->variantType == YAFFS_OBJECT_TYPE_DIRECTORY) {
-		yaffs_SetObjectName(obj, newName);
+	    new_dir->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) {
+		yaffs_set_obj_name(obj, new_name);
 		obj->dirty = 1;
 
-		yaffs_AddObjectToDirectory(newDir, obj);
+		yaffs_add_obj_to_dir(new_dir, obj);
 
 		if (unlinkOp)
 			obj->unlinked = 1;
 
 		/* If it is a deletion then we mark it as a shrink for gc purposes. */
-		if (yaffs_UpdateObjectHeader(obj, newName, 0, deleteOp, shadows) >= 0)
+		if (yaffs_update_oh(obj, new_name, 0, deleteOp, shadows, NULL) >= 0)
 			return YAFFS_OK;
 	}
 
 	return YAFFS_FAIL;
 }
 
-int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName,
-		yaffs_Object *newDir, const YCHAR *newName)
+int yaffs_rename_obj(yaffs_obj_t *old_dir, const YCHAR *old_name,
+		yaffs_obj_t *new_dir, const YCHAR *new_name)
 {
-	yaffs_Object *obj = NULL;
-	yaffs_Object *existingTarget = NULL;
+	yaffs_obj_t *obj = NULL;
+	yaffs_obj_t *existingTarget = NULL;
 	int force = 0;
+	int result;
+	yaffs_dev_t *dev;
 
 
-	if (!oldDir || oldDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
+	if (!old_dir || old_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
 		YBUG();
-	if (!newDir || newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
+	if (!new_dir || new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
 		YBUG();
 
+	dev = old_dir->my_dev;
+
 #ifdef CONFIG_YAFFS_CASE_INSENSITIVE
 	/* Special case for case insemsitive systems (eg. WinCE).
 	 * While look-up is case insensitive, the name isn't.
 	 * Therefore we might want to change x.txt to X.txt
 	*/
-	if (oldDir == newDir && yaffs_strcmp(oldName, newName) == 0)
+	if (old_dir == new_dir && yaffs_strcmp(old_name, new_name) == 0)
 		force = 1;
 #endif
 
-	else if (yaffs_strlen(newName) > YAFFS_MAX_NAME_LENGTH)
+	if(yaffs_strnlen(new_name,YAFFS_MAX_NAME_LENGTH+1) > YAFFS_MAX_NAME_LENGTH)
 		/* ENAMETOOLONG */
 		return YAFFS_FAIL;
 
-	obj = yaffs_FindObjectByName(oldDir, oldName);
+	obj = yaffs_find_by_name(old_dir, old_name);
 
-	if (obj && obj->renameAllowed) {
+	if (obj && obj->rename_allowed) {
 
 		/* Now do the handling for an existing target, if there is one */
 
-		existingTarget = yaffs_FindObjectByName(newDir, newName);
+		existingTarget = yaffs_find_by_name(new_dir, new_name);
 		if (existingTarget &&
-			existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
-			!ylist_empty(&existingTarget->variant.directoryVariant.children)) {
+			existingTarget->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY &&
+			!ylist_empty(&existingTarget->variant.dir_variant.children)) {
 			/* There is a target that is a non-empty directory, so we fail */
 			return YAFFS_FAIL;	/* EEXIST or ENOTEMPTY */
 		} else if (existingTarget && existingTarget != obj) {
 			/* Nuke the target first, using shadowing,
-			 * but only if it isn't the same object
+			 * but only if it isn't the same object.
+			 *
+			 * Note we must disable gc otherwise it can mess up the shadowing.
+			 *
 			 */
-			yaffs_ChangeObjectName(obj, newDir, newName, force,
-						existingTarget->objectId);
-			yaffs_UnlinkObject(existingTarget);
+			dev->gc_disable=1;
+			yaffs_change_obj_name(obj, new_dir, new_name, force,
+						existingTarget->obj_id);
+			existingTarget->is_shadowed = 1;
+			yaffs_unlink_obj(existingTarget);
+			dev->gc_disable=0;
 		}
 
-		return yaffs_ChangeObjectName(obj, newDir, newName, 1, 0);
+		result = yaffs_change_obj_name(obj, new_dir, new_name, 1, 0);
+
+		yaffs_update_parent(old_dir);
+		if(new_dir != old_dir)
+			yaffs_update_parent(new_dir);
+		
+		return result;
 	}
 	return YAFFS_FAIL;
 }
 
 /*------------------------- Block Management and Page Allocation ----------------*/
 
-static int yaffs_InitialiseBlocks(yaffs_Device *dev)
+static int yaffs_init_blocks(yaffs_dev_t *dev)
 {
-	int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
+	int nBlocks = dev->internal_end_block - dev->internal_start_block + 1;
 
-	dev->blockInfo = NULL;
-	dev->chunkBits = NULL;
+	dev->block_info = NULL;
+	dev->chunk_bits = NULL;
 
-	dev->allocationBlock = -1;	/* force it to get a new one */
+	dev->alloc_block = -1;	/* force it to get a new one */
 
 	/* If the first allocation strategy fails, thry the alternate one */
-	dev->blockInfo = YMALLOC(nBlocks * sizeof(yaffs_BlockInfo));
-	if (!dev->blockInfo) {
-		dev->blockInfo = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockInfo));
-		dev->blockInfoAlt = 1;
+	dev->block_info = YMALLOC(nBlocks * sizeof(yaffs_block_info_t));
+	if (!dev->block_info) {
+		dev->block_info = YMALLOC_ALT(nBlocks * sizeof(yaffs_block_info_t));
+		dev->block_info_alt = 1;
 	} else
-		dev->blockInfoAlt = 0;
+		dev->block_info_alt = 0;
 
-	if (dev->blockInfo) {
+	if (dev->block_info) {
 		/* Set up dynamic blockinfo stuff. */
-		dev->chunkBitmapStride = (dev->nChunksPerBlock + 7) / 8; /* round up bytes */
-		dev->chunkBits = YMALLOC(dev->chunkBitmapStride * nBlocks);
-		if (!dev->chunkBits) {
-			dev->chunkBits = YMALLOC_ALT(dev->chunkBitmapStride * nBlocks);
-			dev->chunkBitsAlt = 1;
+		dev->chunk_bit_stride = (dev->param.chunks_per_block + 7) / 8; /* round up bytes */
+		dev->chunk_bits = YMALLOC(dev->chunk_bit_stride * nBlocks);
+		if (!dev->chunk_bits) {
+			dev->chunk_bits = YMALLOC_ALT(dev->chunk_bit_stride * nBlocks);
+			dev->chunk_bits_alt = 1;
 		} else
-			dev->chunkBitsAlt = 0;
+			dev->chunk_bits_alt = 0;
 	}
 
-	if (dev->blockInfo && dev->chunkBits) {
-		memset(dev->blockInfo, 0, nBlocks * sizeof(yaffs_BlockInfo));
-		memset(dev->chunkBits, 0, dev->chunkBitmapStride * nBlocks);
+	if (dev->block_info && dev->chunk_bits) {
+		memset(dev->block_info, 0, nBlocks * sizeof(yaffs_block_info_t));
+		memset(dev->chunk_bits, 0, dev->chunk_bit_stride * nBlocks);
 		return YAFFS_OK;
 	}
 
 	return YAFFS_FAIL;
 }
 
-static void yaffs_DeinitialiseBlocks(yaffs_Device *dev)
+static void yaffs_deinit_blocks(yaffs_dev_t *dev)
 {
-	if (dev->blockInfoAlt && dev->blockInfo)
-		YFREE_ALT(dev->blockInfo);
-	else if (dev->blockInfo)
-		YFREE(dev->blockInfo);
+	if (dev->block_info_alt && dev->block_info)
+		YFREE_ALT(dev->block_info);
+	else if (dev->block_info)
+		YFREE(dev->block_info);
 
-	dev->blockInfoAlt = 0;
+	dev->block_info_alt = 0;
 
-	dev->blockInfo = NULL;
+	dev->block_info = NULL;
 
-	if (dev->chunkBitsAlt && dev->chunkBits)
-		YFREE_ALT(dev->chunkBits);
-	else if (dev->chunkBits)
-		YFREE(dev->chunkBits);
-	dev->chunkBitsAlt = 0;
-	dev->chunkBits = NULL;
+	if (dev->chunk_bits_alt && dev->chunk_bits)
+		YFREE_ALT(dev->chunk_bits);
+	else if (dev->chunk_bits)
+		YFREE(dev->chunk_bits);
+	dev->chunk_bits_alt = 0;
+	dev->chunk_bits = NULL;
 }
 
-static int yaffs_BlockNotDisqualifiedFromGC(yaffs_Device *dev,
-					yaffs_BlockInfo *bi)
-{
-	int i;
-	__u32 seq;
-	yaffs_BlockInfo *b;
-
-	if (!dev->isYaffs2)
-		return 1;	/* disqualification only applies to yaffs2. */
-
-	if (!bi->hasShrinkHeader)
-		return 1;	/* can gc */
-
-	/* Find the oldest dirty sequence number if we don't know it and save it
-	 * so we don't have to keep recomputing it.
-	 */
-	if (!dev->oldestDirtySequence) {
-		seq = dev->sequenceNumber;
-
-		for (i = dev->internalStartBlock; i <= dev->internalEndBlock;
-				i++) {
-			b = yaffs_GetBlockInfo(dev, i);
-			if (b->blockState == YAFFS_BLOCK_STATE_FULL &&
-			    (b->pagesInUse - b->softDeletions) <
-			    dev->nChunksPerBlock && b->sequenceNumber < seq) {
-				seq = b->sequenceNumber;
-			}
-		}
-		dev->oldestDirtySequence = seq;
-	}
-
-	/* Can't do gc of this block if there are any blocks older than this one that have
-	 * discarded pages.
-	 */
-	return (bi->sequenceNumber <= dev->oldestDirtySequence);
-}
-
-/* FindDiretiestBlock is used to select the dirtiest block (or close enough)
- * for garbage collection.
- */
-
-static int yaffs_FindBlockForGarbageCollection(yaffs_Device *dev,
-					int aggressive)
+void yaffs_block_became_dirty(yaffs_dev_t *dev, int block_no)
 {
-	int b = dev->currentDirtyChecker;
-
-	int i;
-	int iterations;
-	int dirtiest = -1;
-	int pagesInUse = 0;
-	int prioritised = 0;
-	yaffs_BlockInfo *bi;
-	int pendingPrioritisedExist = 0;
-
-	/* First let's see if we need to grab a prioritised block */
-	if (dev->hasPendingPrioritisedGCs) {
-		for (i = dev->internalStartBlock; i < dev->internalEndBlock && !prioritised; i++) {
-
-			bi = yaffs_GetBlockInfo(dev, i);
-			/* yaffs_VerifyBlock(dev,bi,i); */
-
-			if (bi->gcPrioritise) {
-				pendingPrioritisedExist = 1;
-				if (bi->blockState == YAFFS_BLOCK_STATE_FULL &&
-				   yaffs_BlockNotDisqualifiedFromGC(dev, bi)) {
-					pagesInUse = (bi->pagesInUse - bi->softDeletions);
-					dirtiest = i;
-					prioritised = 1;
-					aggressive = 1; /* Fool the non-aggressive skip logiv below */
-				}
-			}
-		}
-
-		if (!pendingPrioritisedExist) /* None found, so we can clear this */
-			dev->hasPendingPrioritisedGCs = 0;
-	}
-
-	/* If we're doing aggressive GC then we are happy to take a less-dirty block, and
-	 * search harder.
-	 * else (we're doing a leasurely gc), then we only bother to do this if the
-	 * block has only a few pages in use.
-	 */
-
-	dev->nonAggressiveSkip--;
-
-	if (!aggressive && (dev->nonAggressiveSkip > 0))
-		return -1;
-
-	if (!prioritised)
-		pagesInUse =
-			(aggressive) ? dev->nChunksPerBlock : YAFFS_PASSIVE_GC_CHUNKS + 1;
-
-	if (aggressive)
-		iterations =
-		    dev->internalEndBlock - dev->internalStartBlock + 1;
-	else {
-		iterations =
-		    dev->internalEndBlock - dev->internalStartBlock + 1;
-		iterations = iterations / 16;
-		if (iterations > 200)
-			iterations = 200;
-	}
-
-	for (i = 0; i <= iterations && pagesInUse > 0 && !prioritised; i++) {
-		b++;
-		if (b < dev->internalStartBlock || b > dev->internalEndBlock)
-			b = dev->internalStartBlock;
-
-		if (b < dev->internalStartBlock || b > dev->internalEndBlock) {
-			T(YAFFS_TRACE_ERROR,
-			  (TSTR("**>> Block %d is not valid" TENDSTR), b));
-			YBUG();
-		}
-
-		bi = yaffs_GetBlockInfo(dev, b);
-
-		if (bi->blockState == YAFFS_BLOCK_STATE_FULL &&
-			(bi->pagesInUse - bi->softDeletions) < pagesInUse &&
-				yaffs_BlockNotDisqualifiedFromGC(dev, bi)) {
-			dirtiest = b;
-			pagesInUse = (bi->pagesInUse - bi->softDeletions);
-		}
-	}
-
-	dev->currentDirtyChecker = b;
-
-	if (dirtiest > 0) {
-		T(YAFFS_TRACE_GC,
-		  (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR), dirtiest,
-		   dev->nChunksPerBlock - pagesInUse, prioritised));
-	}
-
-	dev->oldestDirtySequence = 0;
-
-	if (dirtiest > 0)
-		dev->nonAggressiveSkip = 4;
-
-	return dirtiest;
-}
-
-static void yaffs_BlockBecameDirty(yaffs_Device *dev, int blockNo)
-{
-	yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockNo);
+	yaffs_block_info_t *bi = yaffs_get_block_info(dev, block_no);
 
 	int erasedOk = 0;
 
@@ -2714,64 +1883,77 @@ static void yaffs_BlockBecameDirty(yaffs_Device *dev, int blockNo)
 	 */
 
 	T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE,
-		(TSTR("yaffs_BlockBecameDirty block %d state %d %s"TENDSTR),
-		blockNo, bi->blockState, (bi->needsRetiring) ? "needs retiring" : ""));
+		(TSTR("yaffs_block_became_dirty block %d state %d %s"TENDSTR),
+		block_no, bi->block_state, (bi->needs_retiring) ? "needs retiring" : ""));
 
-	bi->blockState = YAFFS_BLOCK_STATE_DIRTY;
+	yaffs2_clear_oldest_dirty_seq(dev,bi);
 
-	if (!bi->needsRetiring) {
-		yaffs_InvalidateCheckpoint(dev);
-		erasedOk = yaffs_EraseBlockInNAND(dev, blockNo);
+	bi->block_state = YAFFS_BLOCK_STATE_DIRTY;
+
+	/* If this is the block being garbage collected then stop gc'ing this block */
+	if(block_no == dev->gc_block)
+		dev->gc_block = 0;
+
+	/* If this block is currently the best candidate for gc then drop as a candidate */
+	if(block_no == dev->gc_dirtiest){
+		dev->gc_dirtiest = 0;
+		dev->gc_pages_in_use = 0;
+	}
+
+	if (!bi->needs_retiring) {
+		yaffs2_checkpt_invalidate(dev);
+		erasedOk = yaffs_erase_block(dev, block_no);
 		if (!erasedOk) {
-			dev->nErasureFailures++;
+			dev->n_erase_failures++;
 			T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
-			  (TSTR("**>> Erasure failed %d" TENDSTR), blockNo));
+			  (TSTR("**>> Erasure failed %d" TENDSTR), block_no));
 		}
 	}
 
 	if (erasedOk &&
-	    ((yaffs_traceMask & YAFFS_TRACE_ERASE) || !yaffs_SkipVerification(dev))) {
+	    ((yaffs_trace_mask & YAFFS_TRACE_ERASE) || !yaffs_skip_verification(dev))) {
 		int i;
-		for (i = 0; i < dev->nChunksPerBlock; i++) {
-			if (!yaffs_CheckChunkErased
-			    (dev, blockNo * dev->nChunksPerBlock + i)) {
+		for (i = 0; i < dev->param.chunks_per_block; i++) {
+			if (!yaffs_check_chunk_erased
+			    (dev, block_no * dev->param.chunks_per_block + i)) {
 				T(YAFFS_TRACE_ERROR,
 				  (TSTR
 				   (">>Block %d erasure supposedly OK, but chunk %d not erased"
-				    TENDSTR), blockNo, i));
+				    TENDSTR), block_no, i));
 			}
 		}
 	}
 
 	if (erasedOk) {
 		/* Clean it up... */
-		bi->blockState = YAFFS_BLOCK_STATE_EMPTY;
-		dev->nErasedBlocks++;
-		bi->pagesInUse = 0;
-		bi->softDeletions = 0;
-		bi->hasShrinkHeader = 0;
-		bi->skipErasedCheck = 1;  /* This is clean, so no need to check */
-		bi->gcPrioritise = 0;
-		yaffs_ClearChunkBits(dev, blockNo);
+		bi->block_state = YAFFS_BLOCK_STATE_EMPTY;
+		bi->seq_number = 0;
+		dev->n_erased_blocks++;
+		bi->pages_in_use = 0;
+		bi->soft_del_pages = 0;
+		bi->has_shrink_hdr = 0;
+		bi->skip_erased_check = 1;  /* This is clean, so no need to check */
+		bi->gc_prioritise = 0;
+		yaffs_clear_chunk_bits(dev, block_no);
 
 		T(YAFFS_TRACE_ERASE,
-		  (TSTR("Erased block %d" TENDSTR), blockNo));
+		  (TSTR("Erased block %d" TENDSTR), block_no));
 	} else {
-		dev->nFreeChunks -= dev->nChunksPerBlock;	/* We lost a block of free space */
+		dev->n_free_chunks -= dev->param.chunks_per_block;	/* We lost a block of free space */
 
-		yaffs_RetireBlock(dev, blockNo);
+		yaffs_retire_block(dev, block_no);
 		T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
-		  (TSTR("**>> Block %d retired" TENDSTR), blockNo));
+		  (TSTR("**>> Block %d retired" TENDSTR), block_no));
 	}
 }
 
-static int yaffs_FindBlockForAllocation(yaffs_Device *dev)
+static int yaffs_find_alloc_block(yaffs_dev_t *dev)
 {
 	int i;
 
-	yaffs_BlockInfo *bi;
+	yaffs_block_info_t *bi;
 
-	if (dev->nErasedBlocks < 1) {
+	if (dev->n_erased_blocks < 1) {
 		/* Hoosterman we've got a problem.
 		 * Can't get space to gc
 		 */
@@ -2783,136 +1965,94 @@ static int yaffs_FindBlockForAllocation(yaffs_Device *dev)
 
 	/* Find an empty block. */
 
-	for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
-		dev->allocationBlockFinder++;
-		if (dev->allocationBlockFinder < dev->internalStartBlock
-		    || dev->allocationBlockFinder > dev->internalEndBlock) {
-			dev->allocationBlockFinder = dev->internalStartBlock;
+	for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
+		dev->alloc_block_finder++;
+		if (dev->alloc_block_finder < dev->internal_start_block
+		    || dev->alloc_block_finder > dev->internal_end_block) {
+			dev->alloc_block_finder = dev->internal_start_block;
 		}
 
-		bi = yaffs_GetBlockInfo(dev, dev->allocationBlockFinder);
+		bi = yaffs_get_block_info(dev, dev->alloc_block_finder);
 
-		if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) {
-			bi->blockState = YAFFS_BLOCK_STATE_ALLOCATING;
-			dev->sequenceNumber++;
-			bi->sequenceNumber = dev->sequenceNumber;
-			dev->nErasedBlocks--;
+		if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) {
+			bi->block_state = YAFFS_BLOCK_STATE_ALLOCATING;
+			dev->seq_number++;
+			bi->seq_number = dev->seq_number;
+			dev->n_erased_blocks--;
 			T(YAFFS_TRACE_ALLOCATE,
 			  (TSTR("Allocated block %d, seq  %d, %d left" TENDSTR),
-			   dev->allocationBlockFinder, dev->sequenceNumber,
-			   dev->nErasedBlocks));
-			return dev->allocationBlockFinder;
+			   dev->alloc_block_finder, dev->seq_number,
+			   dev->n_erased_blocks));
+			return dev->alloc_block_finder;
 		}
 	}
 
 	T(YAFFS_TRACE_ALWAYS,
 	  (TSTR
 	   ("yaffs tragedy: no more erased blocks, but there should have been %d"
-	    TENDSTR), dev->nErasedBlocks));
+	    TENDSTR), dev->n_erased_blocks));
 
 	return -1;
 }
 
 
-
-static int yaffs_CalcCheckpointBlocksRequired(yaffs_Device *dev)
-{
-	if (!dev->nCheckpointBlocksRequired &&
-	   dev->isYaffs2) {
-		/* Not a valid value so recalculate */
-		int nBytes = 0;
-		int nBlocks;
-		int devBlocks = (dev->endBlock - dev->startBlock + 1);
-		int tnodeSize;
-
-		tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
-
-		if (tnodeSize < sizeof(yaffs_Tnode))
-			tnodeSize = sizeof(yaffs_Tnode);
-
-		nBytes += sizeof(yaffs_CheckpointValidity);
-		nBytes += sizeof(yaffs_CheckpointDevice);
-		nBytes += devBlocks * sizeof(yaffs_BlockInfo);
-		nBytes += devBlocks * dev->chunkBitmapStride;
-		nBytes += (sizeof(yaffs_CheckpointObject) + sizeof(__u32)) * (dev->nObjectsCreated - dev->nFreeObjects);
-		nBytes += (tnodeSize + sizeof(__u32)) * (dev->nTnodesCreated - dev->nFreeTnodes);
-		nBytes += sizeof(yaffs_CheckpointValidity);
-		nBytes += sizeof(__u32); /* checksum*/
-
-		/* Round up and add 2 blocks to allow for some bad blocks, so add 3 */
-
-		nBlocks = (nBytes/(dev->nDataBytesPerChunk * dev->nChunksPerBlock)) + 3;
-
-		dev->nCheckpointBlocksRequired = nBlocks;
-	}
-
-	return dev->nCheckpointBlocksRequired;
-}
-
 /*
  * Check if there's space to allocate...
- * Thinks.... do we need top make this ths same as yaffs_GetFreeChunks()?
+ * Thinks.... do we need top make this ths same as yaffs_get_free_chunks()?
  */
-static int yaffs_CheckSpaceForAllocation(yaffs_Device *dev)
+int yaffs_check_alloc_available(yaffs_dev_t *dev, int n_chunks)
 {
 	int reservedChunks;
-	int reservedBlocks = dev->nReservedBlocks;
+	int reservedBlocks = dev->param.n_reserved_blocks;
 	int checkpointBlocks;
 
-	if (dev->isYaffs2) {
-		checkpointBlocks =  yaffs_CalcCheckpointBlocksRequired(dev) -
-				    dev->blocksInCheckpoint;
-		if (checkpointBlocks < 0)
-			checkpointBlocks = 0;
-	} else {
-		checkpointBlocks = 0;
-	}
+	checkpointBlocks = yaffs_calc_checkpt_blocks_required(dev);
 
-	reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->nChunksPerBlock);
+	reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->param.chunks_per_block);
 
-	return (dev->nFreeChunks > reservedChunks);
+	return (dev->n_free_chunks > (reservedChunks + n_chunks));
 }
 
-static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve,
-		yaffs_BlockInfo **blockUsedPtr)
+static int yaffs_alloc_chunk(yaffs_dev_t *dev, int useReserve,
+		yaffs_block_info_t **blockUsedPtr)
 {
 	int retVal;
-	yaffs_BlockInfo *bi;
+	yaffs_block_info_t *bi;
 
-	if (dev->allocationBlock < 0) {
+	if (dev->alloc_block < 0) {
 		/* Get next block to allocate off */
-		dev->allocationBlock = yaffs_FindBlockForAllocation(dev);
-		dev->allocationPage = 0;
+		dev->alloc_block = yaffs_find_alloc_block(dev);
+		dev->alloc_page = 0;
 	}
 
-	if (!useReserve && !yaffs_CheckSpaceForAllocation(dev)) {
+	if (!useReserve && !yaffs_check_alloc_available(dev, 1)) {
 		/* Not enough space to allocate unless we're allowed to use the reserve. */
 		return -1;
 	}
 
-	if (dev->nErasedBlocks < dev->nReservedBlocks
-			&& dev->allocationPage == 0) {
+	if (dev->n_erased_blocks < dev->param.n_reserved_blocks
+			&& dev->alloc_page == 0) {
 		T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR)));
 	}
 
 	/* Next page please.... */
-	if (dev->allocationBlock >= 0) {
-		bi = yaffs_GetBlockInfo(dev, dev->allocationBlock);
+	if (dev->alloc_block >= 0) {
+		bi = yaffs_get_block_info(dev, dev->alloc_block);
 
-		retVal = (dev->allocationBlock * dev->nChunksPerBlock) +
-			dev->allocationPage;
-		bi->pagesInUse++;
-		yaffs_SetChunkBit(dev, dev->allocationBlock,
-				dev->allocationPage);
+		retVal = (dev->alloc_block * dev->param.chunks_per_block) +
+			dev->alloc_page;
+		bi->pages_in_use++;
+		yaffs_set_chunk_bit(dev, dev->alloc_block,
+				dev->alloc_page);
 
-		dev->allocationPage++;
+		dev->alloc_page++;
 
-		dev->nFreeChunks--;
+		dev->n_free_chunks--;
 
 		/* If the block is full set the state to full */
-		if (dev->allocationPage >= dev->nChunksPerBlock) {
-			bi->blockState = YAFFS_BLOCK_STATE_FULL;
-			dev->allocationBlock = -1;
+		if (dev->alloc_page >= dev->param.chunks_per_block) {
+			bi->block_state = YAFFS_BLOCK_STATE_FULL;
+			dev->alloc_block = -1;
 		}
 
 		if (blockUsedPtr)
@@ -2927,120 +2067,132 @@ static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve,
 	return -1;
 }
 
-static int yaffs_GetErasedChunks(yaffs_Device *dev)
+static int yaffs_get_erased_chunks(yaffs_dev_t *dev)
 {
 	int n;
 
-	n = dev->nErasedBlocks * dev->nChunksPerBlock;
+	n = dev->n_erased_blocks * dev->param.chunks_per_block;
 
-	if (dev->allocationBlock > 0)
-		n += (dev->nChunksPerBlock - dev->allocationPage);
+	if (dev->alloc_block > 0)
+		n += (dev->param.chunks_per_block - dev->alloc_page);
 
 	return n;
 
 }
 
-static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block,
+/*
+ * yaffs_skip_rest_of_block() skips over the rest of the allocation block
+ * if we don't want to write to it.
+ */
+void yaffs_skip_rest_of_block(yaffs_dev_t *dev)
+{
+	if(dev->alloc_block > 0){
+		yaffs_block_info_t *bi = yaffs_get_block_info(dev, dev->alloc_block);
+		if(bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING){
+			bi->block_state = YAFFS_BLOCK_STATE_FULL;
+			dev->alloc_block = -1;
+		}
+	}
+}
+
+
+static int yaffs_gc_block(yaffs_dev_t *dev, int block,
 		int wholeBlock)
 {
 	int oldChunk;
 	int newChunk;
-	int markNAND;
+	int mark_flash;
 	int retVal = YAFFS_OK;
-	int cleanups = 0;
 	int i;
 	int isCheckpointBlock;
 	int matchingChunk;
 	int maxCopies;
 
-	int chunksBefore = yaffs_GetErasedChunks(dev);
+	int chunksBefore = yaffs_get_erased_chunks(dev);
 	int chunksAfter;
 
-	yaffs_ExtendedTags tags;
+	yaffs_ext_tags tags;
 
-	yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, block);
+	yaffs_block_info_t *bi = yaffs_get_block_info(dev, block);
 
-	yaffs_Object *object;
+	yaffs_obj_t *object;
 
-	isCheckpointBlock = (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT);
+	isCheckpointBlock = (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT);
 
-	bi->blockState = YAFFS_BLOCK_STATE_COLLECTING;
 
 	T(YAFFS_TRACE_TRACING,
 			(TSTR("Collecting block %d, in use %d, shrink %d, wholeBlock %d" TENDSTR),
 			 block,
-			 bi->pagesInUse,
-			 bi->hasShrinkHeader,
+			 bi->pages_in_use,
+			 bi->has_shrink_hdr,
 			 wholeBlock));
 
-	/*yaffs_VerifyFreeChunks(dev); */
-
-	bi->hasShrinkHeader = 0;	/* clear the flag so that the block can erase */
+	/*yaffs_verify_free_chunks(dev); */
 
-	/* Take off the number of soft deleted entries because
-	 * they're going to get really deleted during GC.
-	 */
-	dev->nFreeChunks -= bi->softDeletions;
+	if(bi->block_state == YAFFS_BLOCK_STATE_FULL)
+		bi->block_state = YAFFS_BLOCK_STATE_COLLECTING;
+	
+	bi->has_shrink_hdr = 0;	/* clear the flag so that the block can erase */
 
-	dev->isDoingGC = 1;
+	dev->gc_disable = 1;
 
 	if (isCheckpointBlock ||
-			!yaffs_StillSomeChunkBits(dev, block)) {
+			!yaffs_still_some_chunks(dev, block)) {
 		T(YAFFS_TRACE_TRACING,
 				(TSTR
 				 ("Collecting block %d that has no chunks in use" TENDSTR),
 				 block));
-		yaffs_BlockBecameDirty(dev, block);
+		yaffs_block_became_dirty(dev, block);
 	} else {
 
-		__u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
+		__u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__);
 
-		yaffs_VerifyBlock(dev, bi, block);
+		yaffs_verify_blk(dev, bi, block);
 
-		maxCopies = (wholeBlock) ? dev->nChunksPerBlock : 10;
-		oldChunk = block * dev->nChunksPerBlock + dev->gcChunk;
+		maxCopies = (wholeBlock) ? dev->param.chunks_per_block : 5;
+		oldChunk = block * dev->param.chunks_per_block + dev->gc_chunk;
 
 		for (/* init already done */;
 		     retVal == YAFFS_OK &&
-		     dev->gcChunk < dev->nChunksPerBlock &&
-		     (bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) &&
+		     dev->gc_chunk < dev->param.chunks_per_block &&
+		     (bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) &&
 		     maxCopies > 0;
-		     dev->gcChunk++, oldChunk++) {
-			if (yaffs_CheckChunkBit(dev, block, dev->gcChunk)) {
+		     dev->gc_chunk++, oldChunk++) {
+			if (yaffs_check_chunk_bit(dev, block, dev->gc_chunk)) {
 
 				/* This page is in use and might need to be copied off */
 
 				maxCopies--;
 
-				markNAND = 1;
+				mark_flash = 1;
 
-				yaffs_InitialiseTags(&tags);
+				yaffs_init_tags(&tags);
 
-				yaffs_ReadChunkWithTagsFromNAND(dev, oldChunk,
+				yaffs_rd_chunk_tags_nand(dev, oldChunk,
 								buffer, &tags);
 
 				object =
-				    yaffs_FindObjectByNumber(dev,
-							     tags.objectId);
+				    yaffs_find_by_number(dev,
+							     tags.obj_id);
 
 				T(YAFFS_TRACE_GC_DETAIL,
 				  (TSTR
 				   ("Collecting chunk in block %d, %d %d %d " TENDSTR),
-				   dev->gcChunk, tags.objectId, tags.chunkId,
-				   tags.byteCount));
+				   dev->gc_chunk, tags.obj_id, tags.chunk_id,
+				   tags.n_bytes));
 
-				if (object && !yaffs_SkipVerification(dev)) {
-					if (tags.chunkId == 0)
-						matchingChunk = object->hdrChunk;
-					else if (object->softDeleted)
+				if (object && !yaffs_skip_verification(dev)) {
+					if (tags.chunk_id == 0)
+						matchingChunk = object->hdr_chunk;
+					else if (object->soft_del)
 						matchingChunk = oldChunk; /* Defeat the test */
 					else
-						matchingChunk = yaffs_FindChunkInFile(object, tags.chunkId, NULL);
+						matchingChunk = yaffs_find_chunk_in_file(object, tags.chunk_id, NULL);
 
 					if (oldChunk != matchingChunk)
 						T(YAFFS_TRACE_ERROR,
 						  (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR),
-						  oldChunk, matchingChunk, tags.objectId, tags.chunkId));
+						  oldChunk, matchingChunk, tags.obj_id, tags.chunk_id));
 
 				}
 
@@ -3049,39 +2201,47 @@ static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block,
 					  (TSTR
 					   ("page %d in gc has no object: %d %d %d "
 					    TENDSTR), oldChunk,
-					    tags.objectId, tags.chunkId, tags.byteCount));
+					    tags.obj_id, tags.chunk_id, tags.n_bytes));
 				}
 
 				if (object &&
 				    object->deleted &&
-				    object->softDeleted &&
-				    tags.chunkId != 0) {
+				    object->soft_del &&
+				    tags.chunk_id != 0) {
 					/* Data chunk in a soft deleted file, throw it away
 					 * It's a soft deleted data chunk,
 					 * No need to copy this, just forget about it and
 					 * fix up the object.
 					 */
+					 
+					/* Free chunks already includes softdeleted chunks.
+					 * How ever this chunk is going to soon be really deleted
+					 * which will increment free chunks.
+					 * We have to decrement free chunks so this works out properly.
+					 */
+					dev->n_free_chunks--;
+					bi->soft_del_pages--;
 
-					object->nDataChunks--;
+					object->n_data_chunks--;
 
-					if (object->nDataChunks <= 0) {
+					if (object->n_data_chunks <= 0) {
 						/* remeber to clean up the object */
-						dev->gcCleanupList[cleanups] =
-						    tags.objectId;
-						cleanups++;
+						dev->gc_cleanup_list[dev->n_clean_ups] =
+						    tags.obj_id;
+						dev->n_clean_ups++;
 					}
-					markNAND = 0;
+					mark_flash = 0;
 				} else if (0) {
-					/* Todo object && object->deleted && object->nDataChunks == 0 */
+					/* Todo object && object->deleted && object->n_data_chunks == 0 */
 					/* Deleted object header with no data chunks.
 					 * Can be discarded and the file deleted.
 					 */
-					object->hdrChunk = 0;
-					yaffs_FreeTnode(object->myDev,
+					object->hdr_chunk = 0;
+					yaffs_free_tnode(object->my_dev,
 							object->variant.
-							fileVariant.top);
-					object->variant.fileVariant.top = NULL;
-					yaffs_DoGenericObjectDeletion(object);
+							file_variant.top);
+					object->variant.file_variant.top = NULL;
+					yaffs_generic_obj_del(object);
 
 				} else if (object) {
 					/* It's either a data chunk in a live file or
@@ -3089,27 +2249,40 @@ static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block,
 					 * NB Need to keep the ObjectHeaders of deleted files
 					 * until the whole file has been deleted off
 					 */
-					tags.serialNumber++;
+					tags.serial_number++;
 
-					dev->nGCCopies++;
+					dev->n_gc_copies++;
 
-					if (tags.chunkId == 0) {
+					if (tags.chunk_id == 0) {
 						/* It is an object Id,
 						 * We need to nuke the shrinkheader flags first
+						 * Also need to clean up shadowing.
 						 * We no longer want the shrinkHeader flag since its work is done
 						 * and if it is left in place it will mess up scanning.
 						 */
 
-						yaffs_ObjectHeader *oh;
-						oh = (yaffs_ObjectHeader *)buffer;
-						oh->isShrink = 0;
-						tags.extraIsShrinkHeader = 0;
+						yaffs_obj_header *oh;
+						oh = (yaffs_obj_header *)buffer;
 
-						yaffs_VerifyObjectHeader(object, oh, &tags, 1);
-					}
+						oh->is_shrink = 0;
+						tags.extra_is_shrink = 0;
+
+						oh->shadows_obj = 0;
+						oh->inband_shadowed_obj_id = 0;
+						tags.extra_shadows = 0;
 
-					newChunk =
-					    yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &tags, 1);
+						/* Update file size */
+						if(object->variant_type == YAFFS_OBJECT_TYPE_FILE){
+							oh->file_size = object->variant.file_variant.file_size;
+							tags.extra_length = oh->file_size;
+						}
+
+						yaffs_verify_oh(object, oh, &tags, 1);
+						newChunk =
+						    yaffs_write_new_chunk(dev,(__u8 *) oh, &tags, 1);
+					} else
+						newChunk =
+						    yaffs_write_new_chunk(dev, buffer, &tags, 1);
 
 					if (newChunk < 0) {
 						retVal = YAFFS_FAIL;
@@ -3117,71 +2290,243 @@ static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block,
 
 						/* Ok, now fix up the Tnodes etc. */
 
-						if (tags.chunkId == 0) {
+						if (tags.chunk_id == 0) {
 							/* It's a header */
-							object->hdrChunk =  newChunk;
-							object->serial =   tags.serialNumber;
+							object->hdr_chunk =  newChunk;
+							object->serial =   tags.serial_number;
 						} else {
 							/* It's a data chunk */
-							yaffs_PutChunkIntoFile
+							int ok;
+							ok = yaffs_put_chunk_in_file
 							    (object,
-							     tags.chunkId,
+							     tags.chunk_id,
 							     newChunk, 0);
 						}
 					}
 				}
 
 				if (retVal == YAFFS_OK)
-					yaffs_DeleteChunk(dev, oldChunk, markNAND, __LINE__);
+					yaffs_chunk_del(dev, oldChunk, mark_flash, __LINE__);
 
 			}
 		}
 
-		yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
+		yaffs_release_temp_buffer(dev, buffer, __LINE__);
+
 
 
+	}
+
+	yaffs_verify_collected_blk(dev, bi, block);
+
+
+
+	if (bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) {
+		/*
+		 * The gc did not complete. Set block state back to FULL
+		 * because checkpointing does not restore gc.
+		 */
+		bi->block_state = YAFFS_BLOCK_STATE_FULL;
+	} else {
+		/* The gc completed. */
 		/* Do any required cleanups */
-		for (i = 0; i < cleanups; i++) {
+		for (i = 0; i < dev->n_clean_ups; i++) {
 			/* Time to delete the file too */
 			object =
-			    yaffs_FindObjectByNumber(dev,
-						     dev->gcCleanupList[i]);
+			    yaffs_find_by_number(dev,
+						     dev->gc_cleanup_list[i]);
 			if (object) {
-				yaffs_FreeTnode(dev,
-						object->variant.fileVariant.
+				yaffs_free_tnode(dev,
+						object->variant.file_variant.
 						top);
-				object->variant.fileVariant.top = NULL;
+				object->variant.file_variant.top = NULL;
 				T(YAFFS_TRACE_GC,
 				  (TSTR
 				   ("yaffs: About to finally delete object %d"
-				    TENDSTR), object->objectId));
-				yaffs_DoGenericObjectDeletion(object);
-				object->myDev->nDeletedFiles--;
+				    TENDSTR), object->obj_id));
+				yaffs_generic_obj_del(object);
+				object->my_dev->n_deleted_files--;
 			}
 
 		}
 
+
+		chunksAfter = yaffs_get_erased_chunks(dev);
+		if (chunksBefore >= chunksAfter) {
+			T(YAFFS_TRACE_GC,
+			  (TSTR
+			   ("gc did not increase free chunks before %d after %d"
+			    TENDSTR), chunksBefore, chunksAfter));
+		}
+		dev->gc_block = 0;
+		dev->gc_chunk = 0;
+		dev->n_clean_ups = 0;
 	}
 
-	yaffs_VerifyCollectedBlock(dev, bi, block);
+	dev->gc_disable = 0;
 
-	chunksAfter = yaffs_GetErasedChunks(dev);
-	if (chunksBefore >= chunksAfter) {
-		T(YAFFS_TRACE_GC,
-		  (TSTR
-		   ("gc did not increase free chunks before %d after %d"
-		    TENDSTR), chunksBefore, chunksAfter));
+	return retVal;
+}
+
+/*
+ * FindBlockForgarbageCollection is used to select the dirtiest block (or close enough)
+ * for garbage collection.
+ */
+
+static unsigned yaffs_find_gc_block(yaffs_dev_t *dev,
+					int aggressive,
+					int background)
+{
+	int i;
+	int iterations;
+	unsigned selected = 0;
+	int prioritised = 0;
+	int prioritisedExists = 0;
+	yaffs_block_info_t *bi;
+	int threshold;
+
+	/* First let's see if we need to grab a prioritised block */
+	if (dev->has_pending_prioritised_gc && !aggressive) {
+		dev->gc_dirtiest = 0;
+		bi = dev->block_info;
+		for (i = dev->internal_start_block;
+			i <= dev->internal_end_block && !selected;
+			i++) {
+
+			if (bi->gc_prioritise) {
+				prioritisedExists = 1;
+				if (bi->block_state == YAFFS_BLOCK_STATE_FULL &&
+				   yaffs_block_ok_for_gc(dev, bi)) {
+					selected = i;
+					prioritised = 1;
+				}
+			}
+			bi++;
+		}
+
+		/*
+		 * If there is a prioritised block and none was selected then
+		 * this happened because there is at least one old dirty block gumming
+		 * up the works. Let's gc the oldest dirty block.
+		 */
+
+		if(prioritisedExists &&
+			!selected &&
+			dev->oldest_dirty_block > 0)
+			selected = dev->oldest_dirty_block;
+
+		if (!prioritisedExists) /* None found, so we can clear this */
+			dev->has_pending_prioritised_gc = 0;
 	}
 
-	/* If the gc completed then clear the current gcBlock so that we find another. */
-	if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING) {
-		dev->gcBlock = -1;
-		dev->gcChunk = 0;
+	/* If we're doing aggressive GC then we are happy to take a less-dirty block, and
+	 * search harder.
+	 * else (we're doing a leasurely gc), then we only bother to do this if the
+	 * block has only a few pages in use.
+	 */
+
+	if (!selected){
+		int pagesUsed;
+		int nBlocks = dev->internal_end_block - dev->internal_start_block + 1;
+		if (aggressive){
+			threshold = dev->param.chunks_per_block;
+			iterations = nBlocks;
+		} else {
+			int maxThreshold;
+
+			if(background)
+				maxThreshold = dev->param.chunks_per_block/2;
+			else
+				maxThreshold = dev->param.chunks_per_block/8;
+
+			if(maxThreshold <  YAFFS_GC_PASSIVE_THRESHOLD)
+				maxThreshold = YAFFS_GC_PASSIVE_THRESHOLD;
+
+			threshold = background ?
+				(dev->gc_not_done + 2) * 2 : 0;
+			if(threshold <YAFFS_GC_PASSIVE_THRESHOLD)
+				threshold = YAFFS_GC_PASSIVE_THRESHOLD;
+			if(threshold > maxThreshold)
+				threshold = maxThreshold;
+
+			iterations = nBlocks / 16 + 1;
+			if (iterations > 100)
+				iterations = 100;
+		}
+
+		for (i = 0;
+			i < iterations &&
+			(dev->gc_dirtiest < 1 ||
+				dev->gc_pages_in_use > YAFFS_GC_GOOD_ENOUGH);
+			i++) {
+			dev->gc_block_finder++;
+			if (dev->gc_block_finder < dev->internal_start_block ||
+				dev->gc_block_finder > dev->internal_end_block)
+				dev->gc_block_finder = dev->internal_start_block;
+
+			bi = yaffs_get_block_info(dev, dev->gc_block_finder);
+
+			pagesUsed = bi->pages_in_use - bi->soft_del_pages;
+
+			if (bi->block_state == YAFFS_BLOCK_STATE_FULL &&
+				pagesUsed < dev->param.chunks_per_block &&
+				(dev->gc_dirtiest < 1 || pagesUsed < dev->gc_pages_in_use) &&
+				yaffs_block_ok_for_gc(dev, bi)) {
+				dev->gc_dirtiest = dev->gc_block_finder;
+				dev->gc_pages_in_use = pagesUsed;
+			}
+		}
+
+		if(dev->gc_dirtiest > 0 && dev->gc_pages_in_use <= threshold)
+			selected = dev->gc_dirtiest;
 	}
 
-	dev->isDoingGC = 0;
+	/*
+	 * If nothing has been selected for a while, try selecting the oldest dirty
+	 * because that's gumming up the works.
+	 */
 
-	return retVal;
+	if(!selected && dev->param.is_yaffs2 &&
+		dev->gc_not_done >= ( background ? 10 : 20)){
+		yaffs2_find_oldest_dirty_seq(dev);
+		if(dev->oldest_dirty_block > 0) {
+			selected = dev->oldest_dirty_block;
+			dev->gc_dirtiest = selected;
+			dev->oldest_dirty_gc_count++;
+			bi = yaffs_get_block_info(dev, selected);
+			dev->gc_pages_in_use =  bi->pages_in_use - bi->soft_del_pages;
+		} else
+			dev->gc_not_done = 0;
+	}
+
+	if(selected){
+		T(YAFFS_TRACE_GC,
+		  (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR),
+		  selected,
+		  dev->param.chunks_per_block - dev->gc_pages_in_use,
+		  prioritised));
+
+		dev->n_gc_blocks++;
+		if(background)
+			dev->bg_gcs++;
+
+		dev->gc_dirtiest = 0;
+		dev->gc_pages_in_use = 0;
+		dev->gc_not_done = 0;
+		if(dev->refresh_skip > 0)
+			dev->refresh_skip--;
+	} else{
+		dev->gc_not_done++;
+		T(YAFFS_TRACE_GC,
+		  (TSTR("GC none: finder %d skip %d threshold %d dirtiest %d using %d oldest %d%s" TENDSTR),
+		  dev->gc_block_finder, dev->gc_not_done,
+		  threshold,
+		  dev->gc_dirtiest, dev->gc_pages_in_use,
+		  dev->oldest_dirty_block,
+		  background ? " bg" : ""));
+	}
+
+	return selected;
 }
 
 /* New garbage collector
@@ -3193,122 +2538,161 @@ static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block,
  * The idea is to help clear out space in a more spread-out manner.
  * Dunno if it really does anything useful.
  */
-static int yaffs_CheckGarbageCollection(yaffs_Device *dev)
+static int yaffs_check_gc(yaffs_dev_t *dev, int background)
 {
-	int block;
-	int aggressive;
+	int aggressive = 0;
 	int gcOk = YAFFS_OK;
 	int maxTries = 0;
-
+	int minErased;
+	int erasedChunks;
 	int checkpointBlockAdjust;
 
-	if (dev->isDoingGC) {
+	if(dev->param.gc_control &&
+		(dev->param.gc_control(dev) & 1) == 0)
+		return YAFFS_OK;
+
+	if (dev->gc_disable) {
 		/* Bail out so we don't get recursive gc */
 		return YAFFS_OK;
 	}
 
 	/* This loop should pass the first time.
-	 * We'll only see looping here if the erase of the collected block fails.
+	 * We'll only see looping here if the collection does not increase space.
 	 */
 
 	do {
 		maxTries++;
 
-		checkpointBlockAdjust = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint;
-		if (checkpointBlockAdjust < 0)
-			checkpointBlockAdjust = 0;
+		checkpointBlockAdjust = yaffs_calc_checkpt_blocks_required(dev);
+
+		minErased  = dev->param.n_reserved_blocks + checkpointBlockAdjust + 1;
+		erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block;
 
-		if (dev->nErasedBlocks < (dev->nReservedBlocks + checkpointBlockAdjust + 2)) {
-			/* We need a block soon...*/
+		/* If we need a block soon then do aggressive gc.*/
+		if (dev->n_erased_blocks < minErased)
 			aggressive = 1;
-		} else {
-			/* We're in no hurry */
-			aggressive = 0;
+		else {
+			if(!background && erasedChunks > (dev->n_free_chunks / 4))
+				break;
+
+			if(dev->gc_skip > 20)
+				dev->gc_skip = 20;
+			if(erasedChunks < dev->n_free_chunks/2 ||
+				dev->gc_skip < 1 ||
+				background)
+				aggressive = 0;
+			else {
+				dev->gc_skip--;
+				break;
+			}
 		}
 
-		if (dev->gcBlock <= 0) {
-			dev->gcBlock = yaffs_FindBlockForGarbageCollection(dev, aggressive);
-			dev->gcChunk = 0;
-		}
+		dev->gc_skip = 5;
 
-		block = dev->gcBlock;
+                /* If we don't already have a block being gc'd then see if we should start another */
+
+		if (dev->gc_block < 1 && !aggressive) {
+			dev->gc_block = yaffs2_find_refresh_block(dev);
+			dev->gc_chunk = 0;
+			dev->n_clean_ups=0;
+		}
+		if (dev->gc_block < 1) {
+			dev->gc_block = yaffs_find_gc_block(dev, aggressive, background);
+			dev->gc_chunk = 0;
+			dev->n_clean_ups=0;
+		}
 
-		if (block > 0) {
-			dev->garbageCollections++;
+		if (dev->gc_block > 0) {
+			dev->all_gcs++;
 			if (!aggressive)
-				dev->passiveGarbageCollections++;
+				dev->passive_gc_count++;
 
 			T(YAFFS_TRACE_GC,
 			  (TSTR
 			   ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR),
-			   dev->nErasedBlocks, aggressive));
+			   dev->n_erased_blocks, aggressive));
 
-			gcOk = yaffs_GarbageCollectBlock(dev, block, aggressive);
+			gcOk = yaffs_gc_block(dev, dev->gc_block, aggressive);
 		}
 
-		if (dev->nErasedBlocks < (dev->nReservedBlocks) && block > 0) {
+		if (dev->n_erased_blocks < (dev->param.n_reserved_blocks) && dev->gc_block > 0) {
 			T(YAFFS_TRACE_GC,
 			  (TSTR
 			   ("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d"
-			    TENDSTR), dev->nErasedBlocks, maxTries, block));
+			    TENDSTR), dev->n_erased_blocks, maxTries, dev->gc_block));
 		}
-	} while ((dev->nErasedBlocks < dev->nReservedBlocks) &&
-		 (block > 0) &&
+	} while ((dev->n_erased_blocks < dev->param.n_reserved_blocks) &&
+		 (dev->gc_block > 0) &&
 		 (maxTries < 2));
 
 	return aggressive ? gcOk : YAFFS_OK;
 }
 
+/*
+ * yaffs_bg_gc()
+ * Garbage collects. Intended to be called from a background thread.
+ * Returns non-zero if at least half the free chunks are erased.
+ */
+int yaffs_bg_gc(yaffs_dev_t *dev, unsigned urgency)
+{
+	int erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block;
+
+	T(YAFFS_TRACE_BACKGROUND, (TSTR("Background gc %u" TENDSTR),urgency));
+
+	yaffs_check_gc(dev, 1);
+	return erasedChunks > dev->n_free_chunks/2;
+}
+
 /*-------------------------  TAGS --------------------------------*/
 
-static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId,
+static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id,
 			   int chunkInObject)
 {
-	return (tags->chunkId == chunkInObject &&
-		tags->objectId == objectId && !tags->chunkDeleted) ? 1 : 0;
+	return (tags->chunk_id == chunkInObject &&
+		tags->obj_id == obj_id && !tags->is_deleted) ? 1 : 0;
 
 }
 
 
 /*-------------------- Data file manipulation -----------------*/
 
-static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode,
-				 yaffs_ExtendedTags *tags)
+static int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk,
+				 yaffs_ext_tags *tags)
 {
 	/*Get the Tnode, then get the level 0 offset chunk offset */
-	yaffs_Tnode *tn;
+	yaffs_tnode_t *tn;
 	int theChunk = -1;
-	yaffs_ExtendedTags localTags;
+	yaffs_ext_tags localTags;
 	int retVal = -1;
 
-	yaffs_Device *dev = in->myDev;
+	yaffs_dev_t *dev = in->my_dev;
 
 	if (!tags) {
 		/* Passed a NULL, so use our own tags space */
 		tags = &localTags;
 	}
 
-	tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode);
+	tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk);
 
 	if (tn) {
-		theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode);
+		theChunk = yaffs_get_group_base(dev, tn, inode_chunk);
 
 		retVal =
-		    yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId,
-					   chunkInInode);
+		    yaffs_find_chunk_in_group(dev, theChunk, tags, in->obj_id,
+					   inode_chunk);
 	}
 	return retVal;
 }
 
-static int yaffs_FindAndDeleteChunkInFile(yaffs_Object *in, int chunkInInode,
-					  yaffs_ExtendedTags *tags)
+static int yaffs_find_del_file_chunk(yaffs_obj_t *in, int inode_chunk,
+					  yaffs_ext_tags *tags)
 {
 	/* Get the Tnode, then get the level 0 offset chunk offset */
-	yaffs_Tnode *tn;
+	yaffs_tnode_t *tn;
 	int theChunk = -1;
-	yaffs_ExtendedTags localTags;
+	yaffs_ext_tags localTags;
 
-	yaffs_Device *dev = in->myDev;
+	yaffs_dev_t *dev = in->my_dev;
 	int retVal = -1;
 
 	if (!tags) {
@@ -3316,102 +2700,47 @@ static int yaffs_FindAndDeleteChunkInFile(yaffs_Object *in, int chunkInInode,
 		tags = &localTags;
 	}
 
-	tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode);
+	tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk);
 
 	if (tn) {
 
-		theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode);
+		theChunk = yaffs_get_group_base(dev, tn, inode_chunk);
 
 		retVal =
-		    yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId,
-					   chunkInInode);
+		    yaffs_find_chunk_in_group(dev, theChunk, tags, in->obj_id,
+					   inode_chunk);
 
 		/* Delete the entry in the filestructure (if found) */
 		if (retVal != -1)
-			yaffs_PutLevel0Tnode(dev, tn, chunkInInode, 0);
+			yaffs_load_tnode_0(dev, tn, inode_chunk, 0);
 	}
 
 	return retVal;
 }
 
-#ifdef YAFFS_PARANOID
 
-static int yaffs_CheckFileSanity(yaffs_Object *in)
+int yaffs_put_chunk_in_file(yaffs_obj_t *in, int inode_chunk,
+			        int nand_chunk, int in_scan)
 {
-	int chunk;
-	int nChunks;
-	int fSize;
-	int failed = 0;
-	int objId;
-	yaffs_Tnode *tn;
-	yaffs_Tags localTags;
-	yaffs_Tags *tags = &localTags;
-	int theChunk;
-	int chunkDeleted;
-
-	if (in->variantType != YAFFS_OBJECT_TYPE_FILE)
-		return YAFFS_FAIL;
-
-	objId = in->objectId;
-	fSize = in->variant.fileVariant.fileSize;
-	nChunks =
-	    (fSize + in->myDev->nDataBytesPerChunk - 1) / in->myDev->nDataBytesPerChunk;
-
-	for (chunk = 1; chunk <= nChunks; chunk++) {
-		tn = yaffs_FindLevel0Tnode(in->myDev, &in->variant.fileVariant,
-					   chunk);
-
-		if (tn) {
-
-			theChunk = yaffs_GetChunkGroupBase(dev, tn, chunk);
-
-			if (yaffs_CheckChunkBits
-			    (dev, theChunk / dev->nChunksPerBlock,
-			     theChunk % dev->nChunksPerBlock)) {
-
-				yaffs_ReadChunkTagsFromNAND(in->myDev, theChunk,
-							    tags,
-							    &chunkDeleted);
-				if (yaffs_TagsMatch
-				    (tags, in->objectId, chunk, chunkDeleted)) {
-					/* found it; */
-
-				}
-			} else {
-
-				failed = 1;
-			}
-
-		} else {
-			/* T(("No level 0 found for %d\n", chunk)); */
-		}
-	}
-
-	return failed ? YAFFS_FAIL : YAFFS_OK;
-}
-
-#endif
-
-static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode,
-				  int chunkInNAND, int inScan)
-{
-	/* NB inScan is zero unless scanning.
-	 * For forward scanning, inScan is > 0;
-	 * for backward scanning inScan is < 0
+	/* NB in_scan is zero unless scanning.
+	 * For forward scanning, in_scan is > 0;
+	 * for backward scanning in_scan is < 0
+	 *
+	 * nand_chunk = 0 is a dummy insert to make sure the tnodes are there.
 	 */
 
-	yaffs_Tnode *tn;
-	yaffs_Device *dev = in->myDev;
+	yaffs_tnode_t *tn;
+	yaffs_dev_t *dev = in->my_dev;
 	int existingChunk;
-	yaffs_ExtendedTags existingTags;
-	yaffs_ExtendedTags newTags;
+	yaffs_ext_tags existingTags;
+	yaffs_ext_tags newTags;
 	unsigned existingSerial, newSerial;
 
-	if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
+	if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) {
 		/* Just ignore an attempt at putting a chunk into a non-file during scanning
 		 * If it is not during Scanning then something went wrong!
 		 */
-		if (!inScan) {
+		if (!in_scan) {
 			T(YAFFS_TRACE_ERROR,
 			  (TSTR
 			   ("yaffs tragedy:attempt to put data chunk into a non-file"
@@ -3419,20 +2748,24 @@ static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode,
 			YBUG();
 		}
 
-		yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__);
+		yaffs_chunk_del(dev, nand_chunk, 1, __LINE__);
 		return YAFFS_OK;
 	}
 
-	tn = yaffs_AddOrFindLevel0Tnode(dev,
-					&in->variant.fileVariant,
-					chunkInInode,
+	tn = yaffs_add_find_tnode_0(dev,
+					&in->variant.file_variant,
+					inode_chunk,
 					NULL);
 	if (!tn)
 		return YAFFS_FAIL;
+	
+	if(!nand_chunk)
+		/* Dummy insert, bail now */
+		return YAFFS_OK;
 
-	existingChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode);
+	existingChunk = yaffs_get_group_base(dev, tn, inode_chunk);
 
-	if (inScan != 0) {
+	if (in_scan != 0) {
 		/* If we're scanning then we need to test for duplicates
 		 * NB This does not need to be efficient since it should only ever
 		 * happen when the power fails during a write, then only one
@@ -3443,7 +2776,7 @@ static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode,
 		 */
 
 		if (existingChunk > 0) {
-			/* NB Right now existing chunk will not be real chunkId if the device >= 32MB
+			/* NB Right now existing chunk will not be real chunk_id if the chunk group size > 1
 			 *    thus we have to do a FindChunkInFile to get the real chunk id.
 			 *
 			 * We have a duplicate now we need to decide which one to use:
@@ -3453,15 +2786,15 @@ static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode,
 			 * YAFFS1: Get both sets of tags and compare serial numbers.
 			 */
 
-			if (inScan > 0) {
+			if (in_scan > 0) {
 				/* Only do this for forward scanning */
-				yaffs_ReadChunkWithTagsFromNAND(dev,
-								chunkInNAND,
+				yaffs_rd_chunk_tags_nand(dev,
+								nand_chunk,
 								NULL, &newTags);
 
 				/* Do a proper find */
 				existingChunk =
-				    yaffs_FindChunkInFile(in, chunkInInode,
+				    yaffs_find_chunk_in_file(in, inode_chunk,
 							  &existingTags);
 			}
 
@@ -3479,27 +2812,26 @@ static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode,
 			 * not be loaded during a scan
 			 */
 
-			if (inScan > 0) {
-				newSerial = newTags.serialNumber;
-				existingSerial = existingTags.serialNumber;
+			if (in_scan > 0) {
+				newSerial = newTags.serial_number;
+				existingSerial = existingTags.serial_number;
 			}
 
-			if ((inScan > 0) &&
-			    (in->myDev->isYaffs2 ||
-			     existingChunk <= 0 ||
+			if ((in_scan > 0) &&
+			    (existingChunk <= 0 ||
 			     ((existingSerial + 1) & 3) == newSerial)) {
 				/* Forward scanning.
 				 * Use new
 				 * Delete the old one and drop through to update the tnode
 				 */
-				yaffs_DeleteChunk(dev, existingChunk, 1,
+				yaffs_chunk_del(dev, existingChunk, 1,
 						  __LINE__);
 			} else {
 				/* Backward scanning or we want to use the existing one
 				 * Use existing.
 				 * Delete the new one and return early so that the tnode isn't changed
 				 */
-				yaffs_DeleteChunk(dev, chunkInNAND, 1,
+				yaffs_chunk_del(dev, nand_chunk, 1,
 						  __LINE__);
 				return YAFFS_OK;
 			}
@@ -3508,96 +2840,98 @@ static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode,
 	}
 
 	if (existingChunk == 0)
-		in->nDataChunks++;
+		in->n_data_chunks++;
 
-	yaffs_PutLevel0Tnode(dev, tn, chunkInInode, chunkInNAND);
+	yaffs_load_tnode_0(dev, tn, inode_chunk, nand_chunk);
 
 	return YAFFS_OK;
 }
 
-static int yaffs_ReadChunkDataFromObject(yaffs_Object *in, int chunkInInode,
+static int yaffs_rd_data_obj(yaffs_obj_t *in, int inode_chunk,
 					__u8 *buffer)
 {
-	int chunkInNAND = yaffs_FindChunkInFile(in, chunkInInode, NULL);
+	int nand_chunk = yaffs_find_chunk_in_file(in, inode_chunk, NULL);
 
-	if (chunkInNAND >= 0)
-		return yaffs_ReadChunkWithTagsFromNAND(in->myDev, chunkInNAND,
+	if (nand_chunk >= 0)
+		return yaffs_rd_chunk_tags_nand(in->my_dev, nand_chunk,
 						buffer, NULL);
 	else {
 		T(YAFFS_TRACE_NANDACCESS,
 		  (TSTR("Chunk %d not found zero instead" TENDSTR),
-		   chunkInNAND));
+		   nand_chunk));
 		/* get sane (zero) data if you read a hole */
-		memset(buffer, 0, in->myDev->nDataBytesPerChunk);
+		memset(buffer, 0, in->my_dev->data_bytes_per_chunk);
 		return 0;
 	}
 
 }
 
-void yaffs_DeleteChunk(yaffs_Device *dev, int chunkId, int markNAND, int lyn)
+void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn)
 {
 	int block;
 	int page;
-	yaffs_ExtendedTags tags;
-	yaffs_BlockInfo *bi;
+	yaffs_ext_tags tags;
+	yaffs_block_info_t *bi;
 
-	if (chunkId <= 0)
+	if (chunk_id <= 0)
 		return;
 
-	dev->nDeletions++;
-	block = chunkId / dev->nChunksPerBlock;
-	page = chunkId % dev->nChunksPerBlock;
+	dev->n_deletions++;
+	block = chunk_id / dev->param.chunks_per_block;
+	page = chunk_id % dev->param.chunks_per_block;
 
 
-	if (!yaffs_CheckChunkBit(dev, block, page))
+	if (!yaffs_check_chunk_bit(dev, block, page))
 		T(YAFFS_TRACE_VERIFY,
 			(TSTR("Deleting invalid chunk %d"TENDSTR),
-			 chunkId));
+			 chunk_id));
 
-	bi = yaffs_GetBlockInfo(dev, block);
+	bi = yaffs_get_block_info(dev, block);
+	
+	yaffs2_update_oldest_dirty_seq(dev, block, bi);
 
 	T(YAFFS_TRACE_DELETION,
-	  (TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunkId));
+	  (TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunk_id));
 
-	if (markNAND &&
-	    bi->blockState != YAFFS_BLOCK_STATE_COLLECTING && !dev->isYaffs2) {
+	if (!dev->param.is_yaffs2 && mark_flash &&
+	    bi->block_state != YAFFS_BLOCK_STATE_COLLECTING) {
 
-		yaffs_InitialiseTags(&tags);
+		yaffs_init_tags(&tags);
 
-		tags.chunkDeleted = 1;
+		tags.is_deleted = 1;
 
-		yaffs_WriteChunkWithTagsToNAND(dev, chunkId, NULL, &tags);
-		yaffs_HandleUpdateChunk(dev, chunkId, &tags);
+		yaffs_wr_chunk_tags_nand(dev, chunk_id, NULL, &tags);
+		yaffs_handle_chunk_update(dev, chunk_id, &tags);
 	} else {
-		dev->nUnmarkedDeletions++;
+		dev->n_unmarked_deletions++;
 	}
 
 	/* Pull out of the management area.
 	 * If the whole block became dirty, this will kick off an erasure.
 	 */
-	if (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING ||
-	    bi->blockState == YAFFS_BLOCK_STATE_FULL ||
-	    bi->blockState == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
-	    bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) {
-		dev->nFreeChunks++;
+	if (bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING ||
+	    bi->block_state == YAFFS_BLOCK_STATE_FULL ||
+	    bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
+	    bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) {
+		dev->n_free_chunks++;
 
-		yaffs_ClearChunkBit(dev, block, page);
+		yaffs_clear_chunk_bit(dev, block, page);
 
-		bi->pagesInUse--;
+		bi->pages_in_use--;
 
-		if (bi->pagesInUse == 0 &&
-		    !bi->hasShrinkHeader &&
-		    bi->blockState != YAFFS_BLOCK_STATE_ALLOCATING &&
-		    bi->blockState != YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
-			yaffs_BlockBecameDirty(dev, block);
+		if (bi->pages_in_use == 0 &&
+		    !bi->has_shrink_hdr &&
+		    bi->block_state != YAFFS_BLOCK_STATE_ALLOCATING &&
+		    bi->block_state != YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
+			yaffs_block_became_dirty(dev, block);
 		}
 
 	}
 
 }
 
-static int yaffs_WriteChunkDataToObject(yaffs_Object *in, int chunkInInode,
-					const __u8 *buffer, int nBytes,
+static int yaffs_wr_data_obj(yaffs_obj_t *in, int inode_chunk,
+					const __u8 *buffer, int n_bytes,
 					int useReserve)
 {
 	/* Find old chunk Need to do this to get serial number
@@ -3606,44 +2940,51 @@ static int yaffs_WriteChunkDataToObject(yaffs_Object *in, int chunkInInode,
 	 */
 
 	int prevChunkId;
-	yaffs_ExtendedTags prevTags;
+	yaffs_ext_tags prevTags;
 
 	int newChunkId;
-	yaffs_ExtendedTags newTags;
+	yaffs_ext_tags newTags;
 
-	yaffs_Device *dev = in->myDev;
+	yaffs_dev_t *dev = in->my_dev;
 
-	yaffs_CheckGarbageCollection(dev);
+	yaffs_check_gc(dev,0);
 
-	/* Get the previous chunk at this location in the file if it exists */
-	prevChunkId = yaffs_FindChunkInFile(in, chunkInInode, &prevTags);
+	/* Get the previous chunk at this location in the file if it exists.
+	 * If it does not exist then put a zero into the tree. This creates
+	 * the tnode now, rather than later when it is harder to clean up.
+	 */
+	prevChunkId = yaffs_find_chunk_in_file(in, inode_chunk, &prevTags);
+	if(prevChunkId < 1 &&
+		!yaffs_put_chunk_in_file(in, inode_chunk, 0, 0))
+		return 0;
 
 	/* Set up new tags */
-	yaffs_InitialiseTags(&newTags);
+	yaffs_init_tags(&newTags);
 
-	newTags.chunkId = chunkInInode;
-	newTags.objectId = in->objectId;
-	newTags.serialNumber =
-	    (prevChunkId >= 0) ? prevTags.serialNumber + 1 : 1;
-	newTags.byteCount = nBytes;
+	newTags.chunk_id = inode_chunk;
+	newTags.obj_id = in->obj_id;
+	newTags.serial_number =
+	    (prevChunkId > 0) ? prevTags.serial_number + 1 : 1;
+	newTags.n_bytes = n_bytes;
 
-	if (nBytes < 1 || nBytes > dev->totalBytesPerChunk) {
+	if (n_bytes < 1 || n_bytes > dev->param.total_bytes_per_chunk) {
 		T(YAFFS_TRACE_ERROR,
-		(TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), nBytes));
+		(TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), n_bytes));
 		YBUG();
 	}
-
+	
+		
 	newChunkId =
-	    yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags,
+	    yaffs_write_new_chunk(dev, buffer, &newTags,
 					      useReserve);
 
-	if (newChunkId >= 0) {
-		yaffs_PutChunkIntoFile(in, chunkInInode, newChunkId, 0);
+	if (newChunkId > 0) {
+		yaffs_put_chunk_in_file(in, inode_chunk, newChunkId, 0);
 
-		if (prevChunkId >= 0)
-			yaffs_DeleteChunk(dev, prevChunkId, 1, __LINE__);
+		if (prevChunkId > 0)
+			yaffs_chunk_del(dev, prevChunkId, 1, __LINE__);
 
-		yaffs_CheckFileSanity(in);
+		yaffs_verify_file_sane(in);
 	}
 	return newChunkId;
 
@@ -3652,56 +2993,57 @@ static int yaffs_WriteChunkDataToObject(yaffs_Object *in, int chunkInInode,
 /* UpdateObjectHeader updates the header on NAND for an object.
  * If name is not NULL, then that new name is used.
  */
-int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force,
-			     int isShrink, int shadows)
+int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name, int force,
+			     int is_shrink, int shadows, yaffs_xattr_mod *xmod)
 {
 
-	yaffs_BlockInfo *bi;
+	yaffs_block_info_t *bi;
 
-	yaffs_Device *dev = in->myDev;
+	yaffs_dev_t *dev = in->my_dev;
 
 	int prevChunkId;
 	int retVal = 0;
 	int result = 0;
 
 	int newChunkId;
-	yaffs_ExtendedTags newTags;
-	yaffs_ExtendedTags oldTags;
+	yaffs_ext_tags newTags;
+	yaffs_ext_tags oldTags;
+	const YCHAR *alias = NULL;
 
 	__u8 *buffer = NULL;
-	YCHAR oldName[YAFFS_MAX_NAME_LENGTH + 1];
+	YCHAR old_name[YAFFS_MAX_NAME_LENGTH + 1];
 
-	yaffs_ObjectHeader *oh = NULL;
+	yaffs_obj_header *oh = NULL;
 
-	yaffs_strcpy(oldName, _Y("silly old name"));
+	yaffs_strcpy(old_name, _Y("silly old name"));
 
 
 	if (!in->fake ||
-		in == dev->rootDir || /* The rootDir should also be saved */
-		force) {
+		in == dev->root_dir || /* The root_dir should also be saved */
+		force  || xmod) {
 
-		yaffs_CheckGarbageCollection(dev);
-		yaffs_CheckObjectDetailsLoaded(in);
+		yaffs_check_gc(dev,0);
+		yaffs_check_obj_details_loaded(in);
 
-		buffer = yaffs_GetTempBuffer(in->myDev, __LINE__);
-		oh = (yaffs_ObjectHeader *) buffer;
+		buffer = yaffs_get_temp_buffer(in->my_dev, __LINE__);
+		oh = (yaffs_obj_header *) buffer;
 
-		prevChunkId = in->hdrChunk;
+		prevChunkId = in->hdr_chunk;
 
 		if (prevChunkId > 0) {
-			result = yaffs_ReadChunkWithTagsFromNAND(dev, prevChunkId,
+			result = yaffs_rd_chunk_tags_nand(dev, prevChunkId,
 							buffer, &oldTags);
 
-			yaffs_VerifyObjectHeader(in, oh, &oldTags, 0);
-
-			memcpy(oldName, oh->name, sizeof(oh->name));
-		}
+			yaffs_verify_oh(in, oh, &oldTags, 0);
 
-		memset(buffer, 0xFF, dev->nDataBytesPerChunk);
+			memcpy(old_name, oh->name, sizeof(oh->name));
+			memset(buffer, 0xFF, sizeof(yaffs_obj_header));
+		} else
+			memset(buffer, 0xFF, dev->data_bytes_per_chunk);
 
-		oh->type = in->variantType;
+		oh->type = in->variant_type;
 		oh->yst_mode = in->yst_mode;
-		oh->shadowsObject = oh->inbandShadowsObject = shadows;
+		oh->shadows_obj = oh->inband_shadowed_obj_id = shadows;
 
 #ifdef CONFIG_YAFFS_WINCE
 		oh->win_atime[0] = in->win_atime[0];
@@ -3719,34 +3061,34 @@ int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force,
 		oh->yst_rdev = in->yst_rdev;
 #endif
 		if (in->parent)
-			oh->parentObjectId = in->parent->objectId;
+			oh->parent_obj_id = in->parent->obj_id;
 		else
-			oh->parentObjectId = 0;
+			oh->parent_obj_id = 0;
 
 		if (name && *name) {
 			memset(oh->name, 0, sizeof(oh->name));
-			yaffs_strncpy(oh->name, name, YAFFS_MAX_NAME_LENGTH);
-		} else if (prevChunkId >= 0)
-			memcpy(oh->name, oldName, sizeof(oh->name));
+			yaffs_load_oh_from_name(dev,oh->name,name);
+		} else if (prevChunkId > 0)
+			memcpy(oh->name, old_name, sizeof(oh->name));
 		else
 			memset(oh->name, 0, sizeof(oh->name));
 
-		oh->isShrink = isShrink;
+		oh->is_shrink = is_shrink;
 
-		switch (in->variantType) {
+		switch (in->variant_type) {
 		case YAFFS_OBJECT_TYPE_UNKNOWN:
 			/* Should not happen */
 			break;
 		case YAFFS_OBJECT_TYPE_FILE:
-			oh->fileSize =
-			    (oh->parentObjectId == YAFFS_OBJECTID_DELETED
-			     || oh->parentObjectId ==
+			oh->file_size =
+			    (oh->parent_obj_id == YAFFS_OBJECTID_DELETED
+			     || oh->parent_obj_id ==
 			     YAFFS_OBJECTID_UNLINKED) ? 0 : in->variant.
-			    fileVariant.fileSize;
+			    file_variant.file_size;
 			break;
 		case YAFFS_OBJECT_TYPE_HARDLINK:
-			oh->equivalentObjectId =
-			    in->variant.hardLinkVariant.equivalentObjectId;
+			oh->equiv_id =
+			    in->variant.hardlink_variant.equiv_id;
 			break;
 		case YAFFS_OBJECT_TYPE_SPECIAL:
 			/* Do nothing */
@@ -3755,54 +3097,62 @@ int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force,
 			/* Do nothing */
 			break;
 		case YAFFS_OBJECT_TYPE_SYMLINK:
+			alias = in->variant.symlink_variant.alias;
+			if(!alias)
+				alias = _Y("no alias");
 			yaffs_strncpy(oh->alias,
-				      in->variant.symLinkVariant.alias,
+					alias,
 				      YAFFS_MAX_ALIAS_LENGTH);
 			oh->alias[YAFFS_MAX_ALIAS_LENGTH] = 0;
 			break;
 		}
 
+		/* process any xattrib modifications */
+		if(xmod)
+			yaffs_apply_xattrib_mod(in, (char *)buffer, xmod);
+
+
 		/* Tags */
-		yaffs_InitialiseTags(&newTags);
+		yaffs_init_tags(&newTags);
 		in->serial++;
-		newTags.chunkId = 0;
-		newTags.objectId = in->objectId;
-		newTags.serialNumber = in->serial;
+		newTags.chunk_id = 0;
+		newTags.obj_id = in->obj_id;
+		newTags.serial_number = in->serial;
 
 		/* Add extra info for file header */
 
-		newTags.extraHeaderInfoAvailable = 1;
-		newTags.extraParentObjectId = oh->parentObjectId;
-		newTags.extraFileLength = oh->fileSize;
-		newTags.extraIsShrinkHeader = oh->isShrink;
-		newTags.extraEquivalentObjectId = oh->equivalentObjectId;
-		newTags.extraShadows = (oh->shadowsObject > 0) ? 1 : 0;
-		newTags.extraObjectType = in->variantType;
+		newTags.extra_available = 1;
+		newTags.extra_parent_id = oh->parent_obj_id;
+		newTags.extra_length = oh->file_size;
+		newTags.extra_is_shrink = oh->is_shrink;
+		newTags.extra_equiv_id = oh->equiv_id;
+		newTags.extra_shadows = (oh->shadows_obj > 0) ? 1 : 0;
+		newTags.extra_obj_type = in->variant_type;
 
-		yaffs_VerifyObjectHeader(in, oh, &newTags, 1);
+		yaffs_verify_oh(in, oh, &newTags, 1);
 
 		/* Create new chunk in NAND */
 		newChunkId =
-		    yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags,
-						      (prevChunkId >= 0) ? 1 : 0);
+		    yaffs_write_new_chunk(dev, buffer, &newTags,
+						      (prevChunkId > 0) ? 1 : 0);
 
 		if (newChunkId >= 0) {
 
-			in->hdrChunk = newChunkId;
+			in->hdr_chunk = newChunkId;
 
-			if (prevChunkId >= 0) {
-				yaffs_DeleteChunk(dev, prevChunkId, 1,
+			if (prevChunkId > 0) {
+				yaffs_chunk_del(dev, prevChunkId, 1,
 						  __LINE__);
 			}
 
-			if (!yaffs_ObjectHasCachedWriteData(in))
+			if (!yaffs_obj_cache_dirty(in))
 				in->dirty = 0;
 
 			/* If this was a shrink, then mark the block that the chunk lives on */
-			if (isShrink) {
-				bi = yaffs_GetBlockInfo(in->myDev,
-					newChunkId / in->myDev->nChunksPerBlock);
-				bi->hasShrinkHeader = 1;
+			if (is_shrink) {
+				bi = yaffs_get_block_info(in->my_dev,
+					newChunkId / in->my_dev->param.chunks_per_block);
+				bi->has_shrink_hdr = 1;
 			}
 
 		}
@@ -3812,7 +3162,7 @@ int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force,
 	}
 
 	if (buffer)
-		yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
+		yaffs_release_temp_buffer(dev, buffer, __LINE__);
 
 	return retVal;
 }
@@ -3830,15 +3180,15 @@ int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force,
  *   need a very intelligent search.
  */
 
-static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj)
+static int yaffs_obj_cache_dirty(yaffs_obj_t *obj)
 {
-	yaffs_Device *dev = obj->myDev;
+	yaffs_dev_t *dev = obj->my_dev;
 	int i;
-	yaffs_ChunkCache *cache;
-	int nCaches = obj->myDev->nShortOpCaches;
+	yaffs_cache_t *cache;
+	int nCaches = obj->my_dev->param.n_caches;
 
 	for (i = 0; i < nCaches; i++) {
-		cache = &dev->srCache[i];
+		cache = &dev->cache[i];
 		if (cache->object == obj &&
 		    cache->dirty)
 			return 1;
@@ -3848,14 +3198,14 @@ static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj)
 }
 
 
-static void yaffs_FlushFilesChunkCache(yaffs_Object *obj)
+static void yaffs_flush_file_cache(yaffs_obj_t *obj)
 {
-	yaffs_Device *dev = obj->myDev;
+	yaffs_dev_t *dev = obj->my_dev;
 	int lowest = -99;	/* Stop compiler whining. */
 	int i;
-	yaffs_ChunkCache *cache;
+	yaffs_cache_t *cache;
 	int chunkWritten = 0;
-	int nCaches = obj->myDev->nShortOpCaches;
+	int nCaches = obj->my_dev->param.n_caches;
 
 	if (nCaches > 0) {
 		do {
@@ -3863,13 +3213,13 @@ static void yaffs_FlushFilesChunkCache(yaffs_Object *obj)
 
 			/* Find the dirty cache for this object with the lowest chunk id. */
 			for (i = 0; i < nCaches; i++) {
-				if (dev->srCache[i].object == obj &&
-				    dev->srCache[i].dirty) {
+				if (dev->cache[i].object == obj &&
+				    dev->cache[i].dirty) {
 					if (!cache
-					    || dev->srCache[i].chunkId <
+					    || dev->cache[i].chunk_id <
 					    lowest) {
-						cache = &dev->srCache[i];
-						lowest = cache->chunkId;
+						cache = &dev->cache[i];
+						lowest = cache->chunk_id;
 					}
 				}
 			}
@@ -3878,10 +3228,10 @@ static void yaffs_FlushFilesChunkCache(yaffs_Object *obj)
 				/* Write it out and free it up */
 
 				chunkWritten =
-				    yaffs_WriteChunkDataToObject(cache->object,
-								 cache->chunkId,
+				    yaffs_wr_data_obj(cache->object,
+								 cache->chunk_id,
 								 cache->data,
-								 cache->nBytes,
+								 cache->n_bytes,
 								 1);
 				cache->dirty = 0;
 				cache->object = NULL;
@@ -3899,15 +3249,15 @@ static void yaffs_FlushFilesChunkCache(yaffs_Object *obj)
 
 }
 
-/*yaffs_FlushEntireDeviceCache(dev)
+/*yaffs_flush_whole_cache(dev)
  *
  *
  */
 
-void yaffs_FlushEntireDeviceCache(yaffs_Device *dev)
+void yaffs_flush_whole_cache(yaffs_dev_t *dev)
 {
-	yaffs_Object *obj;
-	int nCaches = dev->nShortOpCaches;
+	yaffs_obj_t *obj;
+	int nCaches = dev->param.n_caches;
 	int i;
 
 	/* Find a dirty object in the cache and flush it...
@@ -3916,13 +3266,13 @@ void yaffs_FlushEntireDeviceCache(yaffs_Device *dev)
 	do {
 		obj = NULL;
 		for (i = 0; i < nCaches && !obj; i++) {
-			if (dev->srCache[i].object &&
-			    dev->srCache[i].dirty)
-				obj = dev->srCache[i].object;
+			if (dev->cache[i].object &&
+			    dev->cache[i].dirty)
+				obj = dev->cache[i].object;
 
 		}
 		if (obj)
-			yaffs_FlushFilesChunkCache(obj);
+			yaffs_flush_file_cache(obj);
 
 	} while (obj);
 
@@ -3934,32 +3284,32 @@ void yaffs_FlushEntireDeviceCache(yaffs_Device *dev)
  * Then look for the least recently used non-dirty one.
  * Then look for the least recently used dirty one...., flush and look again.
  */
-static yaffs_ChunkCache *yaffs_GrabChunkCacheWorker(yaffs_Device *dev)
+static yaffs_cache_t *yaffs_grab_chunk_worker(yaffs_dev_t *dev)
 {
 	int i;
 
-	if (dev->nShortOpCaches > 0) {
-		for (i = 0; i < dev->nShortOpCaches; i++) {
-			if (!dev->srCache[i].object)
-				return &dev->srCache[i];
+	if (dev->param.n_caches > 0) {
+		for (i = 0; i < dev->param.n_caches; i++) {
+			if (!dev->cache[i].object)
+				return &dev->cache[i];
 		}
 	}
 
 	return NULL;
 }
 
-static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device *dev)
+static yaffs_cache_t *yaffs_grab_chunk_cache(yaffs_dev_t *dev)
 {
-	yaffs_ChunkCache *cache;
-	yaffs_Object *theObj;
+	yaffs_cache_t *cache;
+	yaffs_obj_t *theObj;
 	int usage;
 	int i;
 	int pushout;
 
-	if (dev->nShortOpCaches > 0) {
+	if (dev->param.n_caches > 0) {
 		/* Try find a non-dirty one... */
 
-		cache = yaffs_GrabChunkCacheWorker(dev);
+		cache = yaffs_grab_chunk_worker(dev);
 
 		if (!cache) {
 			/* They were all dirty, find the last recently used object and flush
@@ -3975,21 +3325,21 @@ static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device *dev)
 			cache = NULL;
 			pushout = -1;
 
-			for (i = 0; i < dev->nShortOpCaches; i++) {
-				if (dev->srCache[i].object &&
-				    !dev->srCache[i].locked &&
-				    (dev->srCache[i].lastUse < usage || !cache)) {
-					usage = dev->srCache[i].lastUse;
-					theObj = dev->srCache[i].object;
-					cache = &dev->srCache[i];
+			for (i = 0; i < dev->param.n_caches; i++) {
+				if (dev->cache[i].object &&
+				    !dev->cache[i].locked &&
+				    (dev->cache[i].last_use < usage || !cache)) {
+					usage = dev->cache[i].last_use;
+					theObj = dev->cache[i].object;
+					cache = &dev->cache[i];
 					pushout = i;
 				}
 			}
 
 			if (!cache || cache->dirty) {
 				/* Flush and try again */
-				yaffs_FlushFilesChunkCache(theObj);
-				cache = yaffs_GrabChunkCacheWorker(dev);
+				yaffs_flush_file_cache(theObj);
+				cache = yaffs_grab_chunk_worker(dev);
 			}
 
 		}
@@ -4000,18 +3350,18 @@ static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device *dev)
 }
 
 /* Find a cached chunk */
-static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object *obj,
-					      int chunkId)
+static yaffs_cache_t *yaffs_find_chunk_cache(const yaffs_obj_t *obj,
+					      int chunk_id)
 {
-	yaffs_Device *dev = obj->myDev;
+	yaffs_dev_t *dev = obj->my_dev;
 	int i;
-	if (dev->nShortOpCaches > 0) {
-		for (i = 0; i < dev->nShortOpCaches; i++) {
-			if (dev->srCache[i].object == obj &&
-			    dev->srCache[i].chunkId == chunkId) {
-				dev->cacheHits++;
+	if (dev->param.n_caches > 0) {
+		for (i = 0; i < dev->param.n_caches; i++) {
+			if (dev->cache[i].object == obj &&
+			    dev->cache[i].chunk_id == chunk_id) {
+				dev->cache_hits++;
 
-				return &dev->srCache[i];
+				return &dev->cache[i];
 			}
 		}
 	}
@@ -4019,23 +3369,23 @@ static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object *obj,
 }
 
 /* Mark the chunk for the least recently used algorithym */
-static void yaffs_UseChunkCache(yaffs_Device *dev, yaffs_ChunkCache *cache,
+static void yaffs_use_cache(yaffs_dev_t *dev, yaffs_cache_t *cache,
 				int isAWrite)
 {
 
-	if (dev->nShortOpCaches > 0) {
-		if (dev->srLastUse < 0 || dev->srLastUse > 100000000) {
+	if (dev->param.n_caches > 0) {
+		if (dev->cache_last_use < 0 || dev->cache_last_use > 100000000) {
 			/* Reset the cache usages */
 			int i;
-			for (i = 1; i < dev->nShortOpCaches; i++)
-				dev->srCache[i].lastUse = 0;
+			for (i = 1; i < dev->param.n_caches; i++)
+				dev->cache[i].last_use = 0;
 
-			dev->srLastUse = 0;
+			dev->cache_last_use = 0;
 		}
 
-		dev->srLastUse++;
+		dev->cache_last_use++;
 
-		cache->lastUse = dev->srLastUse;
+		cache->last_use = dev->cache_last_use;
 
 		if (isAWrite)
 			cache->dirty = 1;
@@ -4046,10 +3396,10 @@ static void yaffs_UseChunkCache(yaffs_Device *dev, yaffs_ChunkCache *cache,
  * Do this when a whole page gets written,
  * ie the short cache for this page is no longer valid.
  */
-static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId)
+static void yaffs_invalidate_chunk_cache(yaffs_obj_t *object, int chunk_id)
 {
-	if (object->myDev->nShortOpCaches > 0) {
-		yaffs_ChunkCache *cache = yaffs_FindChunkCache(object, chunkId);
+	if (object->my_dev->param.n_caches > 0) {
+		yaffs_cache_t *cache = yaffs_find_chunk_cache(object, chunk_id);
 
 		if (cache)
 			cache->object = NULL;
@@ -4059,586 +3409,21 @@ static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId)
 /* Invalidate all the cache pages associated with this object
  * Do this whenever ther file is deleted or resized.
  */
-static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in)
+static void yaffs_invalidate_whole_cache(yaffs_obj_t *in)
 {
 	int i;
-	yaffs_Device *dev = in->myDev;
+	yaffs_dev_t *dev = in->my_dev;
 
-	if (dev->nShortOpCaches > 0) {
+	if (dev->param.n_caches > 0) {
 		/* Invalidate it. */
-		for (i = 0; i < dev->nShortOpCaches; i++) {
-			if (dev->srCache[i].object == in)
-				dev->srCache[i].object = NULL;
-		}
-	}
-}
-
-/*--------------------- Checkpointing --------------------*/
-
-
-static int yaffs_WriteCheckpointValidityMarker(yaffs_Device *dev, int head)
-{
-	yaffs_CheckpointValidity cp;
-
-	memset(&cp, 0, sizeof(cp));
-
-	cp.structType = sizeof(cp);
-	cp.magic = YAFFS_MAGIC;
-	cp.version = YAFFS_CHECKPOINT_VERSION;
-	cp.head = (head) ? 1 : 0;
-
-	return (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)) ?
-		1 : 0;
-}
-
-static int yaffs_ReadCheckpointValidityMarker(yaffs_Device *dev, int head)
-{
-	yaffs_CheckpointValidity cp;
-	int ok;
-
-	ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp));
-
-	if (ok)
-		ok = (cp.structType == sizeof(cp)) &&
-		     (cp.magic == YAFFS_MAGIC) &&
-		     (cp.version == YAFFS_CHECKPOINT_VERSION) &&
-		     (cp.head == ((head) ? 1 : 0));
-	return ok ? 1 : 0;
-}
-
-static void yaffs_DeviceToCheckpointDevice(yaffs_CheckpointDevice *cp,
-					   yaffs_Device *dev)
-{
-	cp->nErasedBlocks = dev->nErasedBlocks;
-	cp->allocationBlock = dev->allocationBlock;
-	cp->allocationPage = dev->allocationPage;
-	cp->nFreeChunks = dev->nFreeChunks;
-
-	cp->nDeletedFiles = dev->nDeletedFiles;
-	cp->nUnlinkedFiles = dev->nUnlinkedFiles;
-	cp->nBackgroundDeletions = dev->nBackgroundDeletions;
-	cp->sequenceNumber = dev->sequenceNumber;
-	cp->oldestDirtySequence = dev->oldestDirtySequence;
-
-}
-
-static void yaffs_CheckpointDeviceToDevice(yaffs_Device *dev,
-					   yaffs_CheckpointDevice *cp)
-{
-	dev->nErasedBlocks = cp->nErasedBlocks;
-	dev->allocationBlock = cp->allocationBlock;
-	dev->allocationPage = cp->allocationPage;
-	dev->nFreeChunks = cp->nFreeChunks;
-
-	dev->nDeletedFiles = cp->nDeletedFiles;
-	dev->nUnlinkedFiles = cp->nUnlinkedFiles;
-	dev->nBackgroundDeletions = cp->nBackgroundDeletions;
-	dev->sequenceNumber = cp->sequenceNumber;
-	dev->oldestDirtySequence = cp->oldestDirtySequence;
-}
-
-
-static int yaffs_WriteCheckpointDevice(yaffs_Device *dev)
-{
-	yaffs_CheckpointDevice cp;
-	__u32 nBytes;
-	__u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1);
-
-	int ok;
-
-	/* Write device runtime values*/
-	yaffs_DeviceToCheckpointDevice(&cp, dev);
-	cp.structType = sizeof(cp);
-
-	ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp));
-
-	/* Write block info */
-	if (ok) {
-		nBytes = nBlocks * sizeof(yaffs_BlockInfo);
-		ok = (yaffs_CheckpointWrite(dev, dev->blockInfo, nBytes) == nBytes);
-	}
-
-	/* Write chunk bits */
-	if (ok) {
-		nBytes = nBlocks * dev->chunkBitmapStride;
-		ok = (yaffs_CheckpointWrite(dev, dev->chunkBits, nBytes) == nBytes);
-	}
-	return	 ok ? 1 : 0;
-
-}
-
-static int yaffs_ReadCheckpointDevice(yaffs_Device *dev)
-{
-	yaffs_CheckpointDevice cp;
-	__u32 nBytes;
-	__u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1);
-
-	int ok;
-
-	ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp));
-	if (!ok)
-		return 0;
-
-	if (cp.structType != sizeof(cp))
-		return 0;
-
-
-	yaffs_CheckpointDeviceToDevice(dev, &cp);
-
-	nBytes = nBlocks * sizeof(yaffs_BlockInfo);
-
-	ok = (yaffs_CheckpointRead(dev, dev->blockInfo, nBytes) == nBytes);
-
-	if (!ok)
-		return 0;
-	nBytes = nBlocks * dev->chunkBitmapStride;
-
-	ok = (yaffs_CheckpointRead(dev, dev->chunkBits, nBytes) == nBytes);
-
-	return ok ? 1 : 0;
-}
-
-static void yaffs_ObjectToCheckpointObject(yaffs_CheckpointObject *cp,
-					   yaffs_Object *obj)
-{
-
-	cp->objectId = obj->objectId;
-	cp->parentId = (obj->parent) ? obj->parent->objectId : 0;
-	cp->hdrChunk = obj->hdrChunk;
-	cp->variantType = obj->variantType;
-	cp->deleted = obj->deleted;
-	cp->softDeleted = obj->softDeleted;
-	cp->unlinked = obj->unlinked;
-	cp->fake = obj->fake;
-	cp->renameAllowed = obj->renameAllowed;
-	cp->unlinkAllowed = obj->unlinkAllowed;
-	cp->serial = obj->serial;
-	cp->nDataChunks = obj->nDataChunks;
-
-	if (obj->variantType == YAFFS_OBJECT_TYPE_FILE)
-		cp->fileSizeOrEquivalentObjectId = obj->variant.fileVariant.fileSize;
-	else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
-		cp->fileSizeOrEquivalentObjectId = obj->variant.hardLinkVariant.equivalentObjectId;
-}
-
-static int yaffs_CheckpointObjectToObject(yaffs_Object *obj, yaffs_CheckpointObject *cp)
-{
-
-	yaffs_Object *parent;
-
-	if (obj->variantType != cp->variantType) {
-		T(YAFFS_TRACE_ERROR, (TSTR("Checkpoint read object %d type %d "
-			TCONT("chunk %d does not match existing object type %d")
-			TENDSTR), cp->objectId, cp->variantType, cp->hdrChunk,
-			obj->variantType));
-		return 0;
-	}
-
-	obj->objectId = cp->objectId;
-
-	if (cp->parentId)
-		parent = yaffs_FindOrCreateObjectByNumber(
-					obj->myDev,
-					cp->parentId,
-					YAFFS_OBJECT_TYPE_DIRECTORY);
-	else
-		parent = NULL;
-
-	if (parent) {
-		if (parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
-			T(YAFFS_TRACE_ALWAYS, (TSTR("Checkpoint read object %d parent %d type %d"
-				TCONT(" chunk %d Parent type, %d, not directory")
-				TENDSTR),
-				cp->objectId, cp->parentId, cp->variantType,
-				cp->hdrChunk, parent->variantType));
-			return 0;
-		}
-		yaffs_AddObjectToDirectory(parent, obj);
-	}
-
-	obj->hdrChunk = cp->hdrChunk;
-	obj->variantType = cp->variantType;
-	obj->deleted = cp->deleted;
-	obj->softDeleted = cp->softDeleted;
-	obj->unlinked = cp->unlinked;
-	obj->fake = cp->fake;
-	obj->renameAllowed = cp->renameAllowed;
-	obj->unlinkAllowed = cp->unlinkAllowed;
-	obj->serial = cp->serial;
-	obj->nDataChunks = cp->nDataChunks;
-
-	if (obj->variantType == YAFFS_OBJECT_TYPE_FILE)
-		obj->variant.fileVariant.fileSize = cp->fileSizeOrEquivalentObjectId;
-	else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
-		obj->variant.hardLinkVariant.equivalentObjectId = cp->fileSizeOrEquivalentObjectId;
-
-	if (obj->hdrChunk > 0)
-		obj->lazyLoaded = 1;
-	return 1;
-}
-
-
-
-static int yaffs_CheckpointTnodeWorker(yaffs_Object *in, yaffs_Tnode *tn,
-					__u32 level, int chunkOffset)
-{
-	int i;
-	yaffs_Device *dev = in->myDev;
-	int ok = 1;
-	int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
-
-	if (tnodeSize < sizeof(yaffs_Tnode))
-		tnodeSize = sizeof(yaffs_Tnode);
-
-
-	if (tn) {
-		if (level > 0) {
-
-			for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) {
-				if (tn->internal[i]) {
-					ok = yaffs_CheckpointTnodeWorker(in,
-							tn->internal[i],
-							level - 1,
-							(chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i);
-				}
-			}
-		} else if (level == 0) {
-			__u32 baseOffset = chunkOffset <<  YAFFS_TNODES_LEVEL0_BITS;
-			ok = (yaffs_CheckpointWrite(dev, &baseOffset, sizeof(baseOffset)) == sizeof(baseOffset));
-			if (ok)
-				ok = (yaffs_CheckpointWrite(dev, tn, tnodeSize) == tnodeSize);
-		}
-	}
-
-	return ok;
-
-}
-
-static int yaffs_WriteCheckpointTnodes(yaffs_Object *obj)
-{
-	__u32 endMarker = ~0;
-	int ok = 1;
-
-	if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
-		ok = yaffs_CheckpointTnodeWorker(obj,
-					    obj->variant.fileVariant.top,
-					    obj->variant.fileVariant.topLevel,
-					    0);
-		if (ok)
-			ok = (yaffs_CheckpointWrite(obj->myDev, &endMarker, sizeof(endMarker)) ==
-				sizeof(endMarker));
-	}
-
-	return ok ? 1 : 0;
-}
-
-static int yaffs_ReadCheckpointTnodes(yaffs_Object *obj)
-{
-	__u32 baseChunk;
-	int ok = 1;
-	yaffs_Device *dev = obj->myDev;
-	yaffs_FileStructure *fileStructPtr = &obj->variant.fileVariant;
-	yaffs_Tnode *tn;
-	int nread = 0;
-	int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
-
-	if (tnodeSize < sizeof(yaffs_Tnode))
-		tnodeSize = sizeof(yaffs_Tnode);
-
-	ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk));
-
-	while (ok && (~baseChunk)) {
-		nread++;
-		/* Read level 0 tnode */
-
-
-		tn = yaffs_GetTnodeRaw(dev);
-		if (tn)
-			ok = (yaffs_CheckpointRead(dev, tn, tnodeSize) == tnodeSize);
-		else
-			ok = 0;
-
-		if (tn && ok)
-			ok = yaffs_AddOrFindLevel0Tnode(dev,
-							fileStructPtr,
-							baseChunk,
-							tn) ? 1 : 0;
-
-		if (ok)
-			ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk));
-
-	}
-
-	T(YAFFS_TRACE_CHECKPOINT, (
-		TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR),
-		nread, baseChunk, ok));
-
-	return ok ? 1 : 0;
-}
-
-
-static int yaffs_WriteCheckpointObjects(yaffs_Device *dev)
-{
-	yaffs_Object *obj;
-	yaffs_CheckpointObject cp;
-	int i;
-	int ok = 1;
-	struct ylist_head *lh;
-
-
-	/* Iterate through the objects in each hash entry,
-	 * dumping them to the checkpointing stream.
-	 */
-
-	for (i = 0; ok &&  i <  YAFFS_NOBJECT_BUCKETS; i++) {
-		ylist_for_each(lh, &dev->objectBucket[i].list) {
-			if (lh) {
-				obj = ylist_entry(lh, yaffs_Object, hashLink);
-				if (!obj->deferedFree) {
-					yaffs_ObjectToCheckpointObject(&cp, obj);
-					cp.structType = sizeof(cp);
-
-					T(YAFFS_TRACE_CHECKPOINT, (
-						TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %x" TENDSTR),
-						cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk, (unsigned) obj));
-
-					ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp));
-
-					if (ok && obj->variantType == YAFFS_OBJECT_TYPE_FILE)
-						ok = yaffs_WriteCheckpointTnodes(obj);
-				}
-			}
-		}
-	}
-
-	/* Dump end of list */
-	memset(&cp, 0xFF, sizeof(yaffs_CheckpointObject));
-	cp.structType = sizeof(cp);
-
-	if (ok)
-		ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp));
-
-	return ok ? 1 : 0;
-}
-
-static int yaffs_ReadCheckpointObjects(yaffs_Device *dev)
-{
-	yaffs_Object *obj;
-	yaffs_CheckpointObject cp;
-	int ok = 1;
-	int done = 0;
-	yaffs_Object *hardList = NULL;
-
-	while (ok && !done) {
-		ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp));
-		if (cp.structType != sizeof(cp)) {
-			T(YAFFS_TRACE_CHECKPOINT, (TSTR("struct size %d instead of %d ok %d"TENDSTR),
-				cp.structType, sizeof(cp), ok));
-			ok = 0;
-		}
-
-		T(YAFFS_TRACE_CHECKPOINT, (TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR),
-			cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk));
-
-		if (ok && cp.objectId == ~0)
-			done = 1;
-		else if (ok) {
-			obj = yaffs_FindOrCreateObjectByNumber(dev, cp.objectId, cp.variantType);
-			if (obj) {
-				ok = yaffs_CheckpointObjectToObject(obj, &cp);
-				if (!ok)
-					break;
-				if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
-					ok = yaffs_ReadCheckpointTnodes(obj);
-				} else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
-					obj->hardLinks.next =
-						(struct ylist_head *) hardList;
-					hardList = obj;
-				}
-			} else
-				ok = 0;
+		for (i = 0; i < dev->param.n_caches; i++) {
+			if (dev->cache[i].object == in)
+				dev->cache[i].object = NULL;
 		}
 	}
-
-	if (ok)
-		yaffs_HardlinkFixup(dev, hardList);
-
-	return ok ? 1 : 0;
-}
-
-static int yaffs_WriteCheckpointSum(yaffs_Device *dev)
-{
-	__u32 checkpointSum;
-	int ok;
-
-	yaffs_GetCheckpointSum(dev, &checkpointSum);
-
-	ok = (yaffs_CheckpointWrite(dev, &checkpointSum, sizeof(checkpointSum)) == sizeof(checkpointSum));
-
-	if (!ok)
-		return 0;
-
-	return 1;
-}
-
-static int yaffs_ReadCheckpointSum(yaffs_Device *dev)
-{
-	__u32 checkpointSum0;
-	__u32 checkpointSum1;
-	int ok;
-
-	yaffs_GetCheckpointSum(dev, &checkpointSum0);
-
-	ok = (yaffs_CheckpointRead(dev, &checkpointSum1, sizeof(checkpointSum1)) == sizeof(checkpointSum1));
-
-	if (!ok)
-		return 0;
-
-	if (checkpointSum0 != checkpointSum1)
-		return 0;
-
-	return 1;
 }
 
 
-static int yaffs_WriteCheckpointData(yaffs_Device *dev)
-{
-	int ok = 1;
-
-	if (dev->skipCheckpointWrite || !dev->isYaffs2) {
-		T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR)));
-		ok = 0;
-	}
-
-	if (ok)
-		ok = yaffs_CheckpointOpen(dev, 1);
-
-	if (ok) {
-		T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR)));
-		ok = yaffs_WriteCheckpointValidityMarker(dev, 1);
-	}
-	if (ok) {
-		T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR)));
-		ok = yaffs_WriteCheckpointDevice(dev);
-	}
-	if (ok) {
-		T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR)));
-		ok = yaffs_WriteCheckpointObjects(dev);
-	}
-	if (ok) {
-		T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR)));
-		ok = yaffs_WriteCheckpointValidityMarker(dev, 0);
-	}
-
-	if (ok)
-		ok = yaffs_WriteCheckpointSum(dev);
-
-	if (!yaffs_CheckpointClose(dev))
-		ok = 0;
-
-	if (ok)
-		dev->isCheckpointed = 1;
-	else
-		dev->isCheckpointed = 0;
-
-	return dev->isCheckpointed;
-}
-
-static int yaffs_ReadCheckpointData(yaffs_Device *dev)
-{
-	int ok = 1;
-
-	if (dev->skipCheckpointRead || !dev->isYaffs2) {
-		T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR)));
-		ok = 0;
-	}
-
-	if (ok)
-		ok = yaffs_CheckpointOpen(dev, 0); /* open for read */
-
-	if (ok) {
-		T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR)));
-		ok = yaffs_ReadCheckpointValidityMarker(dev, 1);
-	}
-	if (ok) {
-		T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR)));
-		ok = yaffs_ReadCheckpointDevice(dev);
-	}
-	if (ok) {
-		T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR)));
-		ok = yaffs_ReadCheckpointObjects(dev);
-	}
-	if (ok) {
-		T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR)));
-		ok = yaffs_ReadCheckpointValidityMarker(dev, 0);
-	}
-
-	if (ok) {
-		ok = yaffs_ReadCheckpointSum(dev);
-		T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok));
-	}
-
-	if (!yaffs_CheckpointClose(dev))
-		ok = 0;
-
-	if (ok)
-		dev->isCheckpointed = 1;
-	else
-		dev->isCheckpointed = 0;
-
-	return ok ? 1 : 0;
-
-}
-
-static void yaffs_InvalidateCheckpoint(yaffs_Device *dev)
-{
-	if (dev->isCheckpointed ||
-			dev->blocksInCheckpoint > 0) {
-		dev->isCheckpointed = 0;
-		yaffs_CheckpointInvalidateStream(dev);
-		if (dev->superBlock && dev->markSuperBlockDirty)
-			dev->markSuperBlockDirty(dev->superBlock);
-	}
-}
-
-
-int yaffs_CheckpointSave(yaffs_Device *dev)
-{
-
-	T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
-
-	yaffs_VerifyObjects(dev);
-	yaffs_VerifyBlocks(dev);
-	yaffs_VerifyFreeChunks(dev);
-
-	if (!dev->isCheckpointed) {
-		yaffs_InvalidateCheckpoint(dev);
-		yaffs_WriteCheckpointData(dev);
-	}
-
-	T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
-
-	return dev->isCheckpointed;
-}
-
-int yaffs_CheckpointRestore(yaffs_Device *dev)
-{
-	int retval;
-	T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
-
-	retval = yaffs_ReadCheckpointData(dev);
-
-	if (dev->isCheckpointed) {
-		yaffs_VerifyObjects(dev);
-		yaffs_VerifyBlocks(dev);
-		yaffs_VerifyFreeChunks(dev);
-	}
-
-	T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
-
-	return retval;
-}
-
 /*--------------------- File read/write ------------------------
  * Read and write have very similar structures.
  * In general the read/write has three parts to it
@@ -4649,59 +3434,59 @@ int yaffs_CheckpointRestore(yaffs_Device *dev)
  * Curve-balls: the first chunk might also be the last chunk.
  */
 
-int yaffs_ReadDataFromFile(yaffs_Object *in, __u8 *buffer, loff_t offset,
-			int nBytes)
+int yaffs_file_rd(yaffs_obj_t *in, __u8 *buffer, loff_t offset,
+			int n_bytes)
 {
 
 	int chunk;
 	__u32 start;
 	int nToCopy;
-	int n = nBytes;
+	int n = n_bytes;
 	int nDone = 0;
-	yaffs_ChunkCache *cache;
+	yaffs_cache_t *cache;
 
-	yaffs_Device *dev;
+	yaffs_dev_t *dev;
 
-	dev = in->myDev;
+	dev = in->my_dev;
 
 	while (n > 0) {
-		/* chunk = offset / dev->nDataBytesPerChunk + 1; */
-		/* start = offset % dev->nDataBytesPerChunk; */
-		yaffs_AddrToChunk(dev, offset, &chunk, &start);
+		/* chunk = offset / dev->data_bytes_per_chunk + 1; */
+		/* start = offset % dev->data_bytes_per_chunk; */
+		yaffs_addr_to_chunk(dev, offset, &chunk, &start);
 		chunk++;
 
 		/* OK now check for the curveball where the start and end are in
 		 * the same chunk.
 		 */
-		if ((start + n) < dev->nDataBytesPerChunk)
+		if ((start + n) < dev->data_bytes_per_chunk)
 			nToCopy = n;
 		else
-			nToCopy = dev->nDataBytesPerChunk - start;
+			nToCopy = dev->data_bytes_per_chunk - start;
 
-		cache = yaffs_FindChunkCache(in, chunk);
+		cache = yaffs_find_chunk_cache(in, chunk);
 
 		/* If the chunk is already in the cache or it is less than a whole chunk
 		 * or we're using inband tags then use the cache (if there is caching)
 		 * else bypass the cache.
 		 */
-		if (cache || nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) {
-			if (dev->nShortOpCaches > 0) {
+		if (cache || nToCopy != dev->data_bytes_per_chunk || dev->param.inband_tags) {
+			if (dev->param.n_caches > 0) {
 
 				/* If we can't find the data in the cache, then load it up. */
 
 				if (!cache) {
-					cache = yaffs_GrabChunkCache(in->myDev);
+					cache = yaffs_grab_chunk_cache(in->my_dev);
 					cache->object = in;
-					cache->chunkId = chunk;
+					cache->chunk_id = chunk;
 					cache->dirty = 0;
 					cache->locked = 0;
-					yaffs_ReadChunkDataFromObject(in, chunk,
+					yaffs_rd_data_obj(in, chunk,
 								      cache->
 								      data);
-					cache->nBytes = 0;
+					cache->n_bytes = 0;
 				}
 
-				yaffs_UseChunkCache(dev, cache, 0);
+				yaffs_use_cache(dev, cache, 0);
 
 				cache->locked = 1;
 
@@ -4713,21 +3498,21 @@ int yaffs_ReadDataFromFile(yaffs_Object *in, __u8 *buffer, loff_t offset,
 				/* Read into the local buffer then copy..*/
 
 				__u8 *localBuffer =
-				    yaffs_GetTempBuffer(dev, __LINE__);
-				yaffs_ReadChunkDataFromObject(in, chunk,
+				    yaffs_get_temp_buffer(dev, __LINE__);
+				yaffs_rd_data_obj(in, chunk,
 							      localBuffer);
 
 				memcpy(buffer, &localBuffer[start], nToCopy);
 
 
-				yaffs_ReleaseTempBuffer(dev, localBuffer,
+				yaffs_release_temp_buffer(dev, localBuffer,
 							__LINE__);
 			}
 
 		} else {
 
 			/* A full chunk. Read directly into the supplied buffer. */
-			yaffs_ReadChunkDataFromObject(in, chunk, buffer);
+			yaffs_rd_data_obj(in, chunk, buffer);
 
 		}
 
@@ -4741,44 +3526,42 @@ int yaffs_ReadDataFromFile(yaffs_Object *in, __u8 *buffer, loff_t offset,
 	return nDone;
 }
 
-int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset,
-			int nBytes, int writeThrough)
+int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset,
+			int n_bytes, int write_trhrough)
 {
 
 	int chunk;
 	__u32 start;
 	int nToCopy;
-	int n = nBytes;
+	int n = n_bytes;
 	int nDone = 0;
 	int nToWriteBack;
 	int startOfWrite = offset;
 	int chunkWritten = 0;
-	__u32 nBytesRead;
+	__u32 n_bytesRead;
 	__u32 chunkStart;
 
-	yaffs_Device *dev;
+	yaffs_dev_t *dev;
 
-	dev = in->myDev;
+	dev = in->my_dev;
 
 	while (n > 0 && chunkWritten >= 0) {
-		/* chunk = offset / dev->nDataBytesPerChunk + 1; */
-		/* start = offset % dev->nDataBytesPerChunk; */
-		yaffs_AddrToChunk(dev, offset, &chunk, &start);
+		yaffs_addr_to_chunk(dev, offset, &chunk, &start);
 
-		if (chunk * dev->nDataBytesPerChunk + start != offset ||
-				start >= dev->nDataBytesPerChunk) {
+		if (chunk * dev->data_bytes_per_chunk + start != offset ||
+				start >= dev->data_bytes_per_chunk) {
 			T(YAFFS_TRACE_ERROR, (
 			   TSTR("AddrToChunk of offset %d gives chunk %d start %d"
 			   TENDSTR),
 			   (int)offset, chunk, start));
 		}
-		chunk++;
+		chunk++; /* File pos to chunk in file offset */
 
 		/* OK now check for the curveball where the start and end are in
 		 * the same chunk.
 		 */
 
-		if ((start + n) < dev->nDataBytesPerChunk) {
+		if ((start + n) < dev->data_bytes_per_chunk) {
 			nToCopy = n;
 
 			/* Now folks, to calculate how many bytes to write back....
@@ -4786,51 +3569,49 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset,
 			 * we need to write back as much as was there before.
 			 */
 
-			chunkStart = ((chunk - 1) * dev->nDataBytesPerChunk);
+			chunkStart = ((chunk - 1) * dev->data_bytes_per_chunk);
 
-			if (chunkStart > in->variant.fileVariant.fileSize)
-				nBytesRead = 0; /* Past end of file */
+			if (chunkStart > in->variant.file_variant.file_size)
+				n_bytesRead = 0; /* Past end of file */
 			else
-				nBytesRead = in->variant.fileVariant.fileSize - chunkStart;
+				n_bytesRead = in->variant.file_variant.file_size - chunkStart;
 
-			if (nBytesRead > dev->nDataBytesPerChunk)
-				nBytesRead = dev->nDataBytesPerChunk;
+			if (n_bytesRead > dev->data_bytes_per_chunk)
+				n_bytesRead = dev->data_bytes_per_chunk;
 
 			nToWriteBack =
-			    (nBytesRead >
-			     (start + n)) ? nBytesRead : (start + n);
+			    (n_bytesRead >
+			     (start + n)) ? n_bytesRead : (start + n);
 
-			if (nToWriteBack < 0 || nToWriteBack > dev->nDataBytesPerChunk)
+			if (nToWriteBack < 0 || nToWriteBack > dev->data_bytes_per_chunk)
 				YBUG();
 
 		} else {
-			nToCopy = dev->nDataBytesPerChunk - start;
-			nToWriteBack = dev->nDataBytesPerChunk;
+			nToCopy = dev->data_bytes_per_chunk - start;
+			nToWriteBack = dev->data_bytes_per_chunk;
 		}
 
-		if (nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) {
+		if (nToCopy != dev->data_bytes_per_chunk || dev->param.inband_tags) {
 			/* An incomplete start or end chunk (or maybe both start and end chunk),
 			 * or we're using inband tags, so we want to use the cache buffers.
 			 */
-			if (dev->nShortOpCaches > 0) {
-				yaffs_ChunkCache *cache;
+			if (dev->param.n_caches > 0) {
+				yaffs_cache_t *cache;
 				/* If we can't find the data in the cache, then load the cache */
-				cache = yaffs_FindChunkCache(in, chunk);
+				cache = yaffs_find_chunk_cache(in, chunk);
 
 				if (!cache
-				    && yaffs_CheckSpaceForAllocation(in->
-								     myDev)) {
-					cache = yaffs_GrabChunkCache(in->myDev);
+				    && yaffs_check_alloc_available(dev, 1)) {
+					cache = yaffs_grab_chunk_cache(dev);
 					cache->object = in;
-					cache->chunkId = chunk;
+					cache->chunk_id = chunk;
 					cache->dirty = 0;
 					cache->locked = 0;
-					yaffs_ReadChunkDataFromObject(in, chunk,
-								      cache->
-								      data);
+					yaffs_rd_data_obj(in, chunk,
+								      cache->data);
 				} else if (cache &&
 					!cache->dirty &&
-					!yaffs_CheckSpaceForAllocation(in->myDev)) {
+					!yaffs_check_alloc_available(dev, 1)) {
 					/* Drop the cache if it was a read cache item and
 					 * no space check has been made for it.
 					 */
@@ -4838,7 +3619,7 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset,
 				}
 
 				if (cache) {
-					yaffs_UseChunkCache(dev, cache, 1);
+					yaffs_use_cache(dev, cache, 1);
 					cache->locked = 1;
 
 
@@ -4847,14 +3628,14 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset,
 
 
 					cache->locked = 0;
-					cache->nBytes = nToWriteBack;
+					cache->n_bytes = nToWriteBack;
 
-					if (writeThrough) {
+					if (write_trhrough) {
 						chunkWritten =
-						    yaffs_WriteChunkDataToObject
+						    yaffs_wr_data_obj
 						    (cache->object,
-						     cache->chunkId,
-						     cache->data, cache->nBytes,
+						     cache->chunk_id,
+						     cache->data, cache->n_bytes,
 						     1);
 						cache->dirty = 0;
 					}
@@ -4868,9 +3649,9 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset,
 				 */
 
 				__u8 *localBuffer =
-				    yaffs_GetTempBuffer(dev, __LINE__);
+				    yaffs_get_temp_buffer(dev, __LINE__);
 
-				yaffs_ReadChunkDataFromObject(in, chunk,
+				yaffs_rd_data_obj(in, chunk,
 							      localBuffer);
 
 
@@ -4878,12 +3659,12 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset,
 				memcpy(&localBuffer[start], buffer, nToCopy);
 
 				chunkWritten =
-				    yaffs_WriteChunkDataToObject(in, chunk,
+				    yaffs_wr_data_obj(in, chunk,
 								 localBuffer,
 								 nToWriteBack,
 								 0);
 
-				yaffs_ReleaseTempBuffer(dev, localBuffer,
+				yaffs_release_temp_buffer(dev, localBuffer,
 							__LINE__);
 
 			}
@@ -4894,12 +3675,12 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset,
 
 
 			chunkWritten =
-			    yaffs_WriteChunkDataToObject(in, chunk, buffer,
-							 dev->nDataBytesPerChunk,
+			    yaffs_wr_data_obj(in, chunk, buffer,
+							 dev->data_bytes_per_chunk,
 							 0);
 
 			/* Since we've overwritten the cached data, we better invalidate it. */
-			yaffs_InvalidateChunkCache(in, chunk);
+			yaffs_invalidate_chunk_cache(in, chunk);
 		}
 
 		if (chunkWritten >= 0) {
@@ -4913,29 +3694,37 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset,
 
 	/* Update file object */
 
-	if ((startOfWrite + nDone) > in->variant.fileVariant.fileSize)
-		in->variant.fileVariant.fileSize = (startOfWrite + nDone);
+	if ((startOfWrite + nDone) > in->variant.file_variant.file_size)
+		in->variant.file_variant.file_size = (startOfWrite + nDone);
 
 	in->dirty = 1;
 
 	return nDone;
 }
 
+int yaffs_wr_file(yaffs_obj_t *in, const __u8 *buffer, loff_t offset,
+			int n_bytes, int write_trhrough)
+{
+	yaffs2_handle_hole(in,offset);
+	return yaffs_do_file_wr(in,buffer,offset,n_bytes,write_trhrough);
+}
+
+
 
 /* ---------------------- File resizing stuff ------------------ */
 
-static void yaffs_PruneResizedChunks(yaffs_Object *in, int newSize)
+static void yaffs_prune_chunks(yaffs_obj_t *in, int new_size)
 {
 
-	yaffs_Device *dev = in->myDev;
-	int oldFileSize = in->variant.fileVariant.fileSize;
+	yaffs_dev_t *dev = in->my_dev;
+	int oldFileSize = in->variant.file_variant.file_size;
 
-	int lastDel = 1 + (oldFileSize - 1) / dev->nDataBytesPerChunk;
+	int lastDel = 1 + (oldFileSize - 1) / dev->data_bytes_per_chunk;
 
-	int startDel = 1 + (newSize + dev->nDataBytesPerChunk - 1) /
-	    dev->nDataBytesPerChunk;
+	int startDel = 1 + (new_size + dev->data_bytes_per_chunk - 1) /
+	    dev->data_bytes_per_chunk;
 	int i;
-	int chunkId;
+	int chunk_id;
 
 	/* Delete backwards so that we don't end up with holes if
 	 * power is lost part-way through the operation.
@@ -4943,103 +3732,112 @@ static void yaffs_PruneResizedChunks(yaffs_Object *in, int newSize)
 	for (i = lastDel; i >= startDel; i--) {
 		/* NB this could be optimised somewhat,
 		 * eg. could retrieve the tags and write them without
-		 * using yaffs_DeleteChunk
+		 * using yaffs_chunk_del
 		 */
 
-		chunkId = yaffs_FindAndDeleteChunkInFile(in, i, NULL);
-		if (chunkId > 0) {
-			if (chunkId <
-			    (dev->internalStartBlock * dev->nChunksPerBlock)
-			    || chunkId >=
-			    ((dev->internalEndBlock +
-			      1) * dev->nChunksPerBlock)) {
+		chunk_id = yaffs_find_del_file_chunk(in, i, NULL);
+		if (chunk_id > 0) {
+			if (chunk_id <
+			    (dev->internal_start_block * dev->param.chunks_per_block)
+			    || chunk_id >=
+			    ((dev->internal_end_block +
+			      1) * dev->param.chunks_per_block)) {
 				T(YAFFS_TRACE_ALWAYS,
-				  (TSTR("Found daft chunkId %d for %d" TENDSTR),
-				   chunkId, i));
+				  (TSTR("Found daft chunk_id %d for %d" TENDSTR),
+				   chunk_id, i));
 			} else {
-				in->nDataChunks--;
-				yaffs_DeleteChunk(dev, chunkId, 1, __LINE__);
+				in->n_data_chunks--;
+				yaffs_chunk_del(dev, chunk_id, 1, __LINE__);
 			}
 		}
 	}
 
 }
 
-int yaffs_ResizeFile(yaffs_Object *in, loff_t newSize)
-{
 
-	int oldFileSize = in->variant.fileVariant.fileSize;
-	__u32 newSizeOfPartialChunk;
+void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size)
+{
 	int newFullChunks;
+	__u32 new_sizeOfPartialChunk;
+	yaffs_dev_t *dev = obj->my_dev;
 
-	yaffs_Device *dev = in->myDev;
+	yaffs_addr_to_chunk(dev, new_size, &newFullChunks, &new_sizeOfPartialChunk);
 
-	yaffs_AddrToChunk(dev, newSize, &newFullChunks, &newSizeOfPartialChunk);
+	yaffs_prune_chunks(obj, new_size);
 
-	yaffs_FlushFilesChunkCache(in);
-	yaffs_InvalidateWholeChunkCache(in);
+	if (new_sizeOfPartialChunk != 0) {
+		int lastChunk = 1 + newFullChunks;
+		__u8 *localBuffer = yaffs_get_temp_buffer(dev, __LINE__);
 
-	yaffs_CheckGarbageCollection(dev);
+		/* Got to read and rewrite the last chunk with its new size and zero pad */
+		yaffs_rd_data_obj(obj, lastChunk, localBuffer);
+		memset(localBuffer + new_sizeOfPartialChunk, 0,
+			dev->data_bytes_per_chunk - new_sizeOfPartialChunk);
 
-	if (in->variantType != YAFFS_OBJECT_TYPE_FILE)
-		return YAFFS_FAIL;
-
-	if (newSize == oldFileSize)
-		return YAFFS_OK;
+		yaffs_wr_data_obj(obj, lastChunk, localBuffer,
+					     new_sizeOfPartialChunk, 1);
 
-	if (newSize < oldFileSize) {
-
-		yaffs_PruneResizedChunks(in, newSize);
+		yaffs_release_temp_buffer(dev, localBuffer, __LINE__);
+	}
 
-		if (newSizeOfPartialChunk != 0) {
-			int lastChunk = 1 + newFullChunks;
+	obj->variant.file_variant.file_size = new_size;
 
-			__u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
+	yaffs_prune_tree(dev, &obj->variant.file_variant);
+}
 
-			/* Got to read and rewrite the last chunk with its new size and zero pad */
-			yaffs_ReadChunkDataFromObject(in, lastChunk,
-						      localBuffer);
 
-			memset(localBuffer + newSizeOfPartialChunk, 0,
-			       dev->nDataBytesPerChunk - newSizeOfPartialChunk);
+int yaffs_resize_file(yaffs_obj_t *in, loff_t new_size)
+{
+	yaffs_dev_t *dev = in->my_dev;
+	int oldFileSize = in->variant.file_variant.file_size;
 
-			yaffs_WriteChunkDataToObject(in, lastChunk, localBuffer,
-						     newSizeOfPartialChunk, 1);
+	yaffs_flush_file_cache(in);
+	yaffs_invalidate_whole_cache(in);
 
-			yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__);
-		}
+	yaffs_check_gc(dev,0);
 
-		in->variant.fileVariant.fileSize = newSize;
+	if (in->variant_type != YAFFS_OBJECT_TYPE_FILE)
+		return YAFFS_FAIL;
 
-		yaffs_PruneFileStructure(dev, &in->variant.fileVariant);
+	if (new_size == oldFileSize)
+		return YAFFS_OK;
+		
+	if(new_size > oldFileSize){
+		yaffs2_handle_hole(in,new_size);
+		in->variant.file_variant.file_size = new_size;
 	} else {
-		/* newsSize > oldFileSize */
-		in->variant.fileVariant.fileSize = newSize;
-	}
-
+		/* new_size < oldFileSize */ 
+		yaffs_resize_file_down(in, new_size);
+	} 
 
-	/* Write a new object header.
+	/* Write a new object header to reflect the resize.
 	 * show we've shrunk the file, if need be
-	 * Do this only if the file is not in the deleted directories.
+	 * Do this only if the file is not in the deleted directories
+	 * and is not shadowed.
 	 */
 	if (in->parent &&
-	    in->parent->objectId != YAFFS_OBJECTID_UNLINKED &&
-	    in->parent->objectId != YAFFS_OBJECTID_DELETED)
-		yaffs_UpdateObjectHeader(in, NULL, 0,
-					 (newSize < oldFileSize) ? 1 : 0, 0);
+	    !in->is_shadowed &&
+	    in->parent->obj_id != YAFFS_OBJECTID_UNLINKED &&
+	    in->parent->obj_id != YAFFS_OBJECTID_DELETED)
+		yaffs_update_oh(in, NULL, 0, 0, 0, NULL);
+
 
 	return YAFFS_OK;
 }
 
-loff_t yaffs_GetFileSize(yaffs_Object *obj)
+loff_t yaffs_get_file_size(yaffs_obj_t *obj)
 {
-	obj = yaffs_GetEquivalentObject(obj);
+	YCHAR *alias = NULL;
+	obj = yaffs_get_equivalent_obj(obj);
 
-	switch (obj->variantType) {
+	switch (obj->variant_type) {
 	case YAFFS_OBJECT_TYPE_FILE:
-		return obj->variant.fileVariant.fileSize;
+		return obj->variant.file_variant.file_size;
 	case YAFFS_OBJECT_TYPE_SYMLINK:
-		return yaffs_strlen(obj->variant.symLinkVariant.alias);
+		alias = obj->variant.symlink_variant.alias;
+		if(!alias)
+			return 0;
+		return yaffs_strnlen(alias,YAFFS_MAX_ALIAS_LENGTH);
 	default:
 		return 0;
 	}
@@ -5047,23 +3845,27 @@ loff_t yaffs_GetFileSize(yaffs_Object *obj)
 
 
 
-int yaffs_FlushFile(yaffs_Object *in, int updateTime)
+int yaffs_flush_file(yaffs_obj_t *in, int update_time, int data_sync)
 {
 	int retVal;
 	if (in->dirty) {
-		yaffs_FlushFilesChunkCache(in);
-		if (updateTime) {
+		yaffs_flush_file_cache(in);
+		if(data_sync) /* Only sync data */
+			retVal=YAFFS_OK;
+		else {
+			if (update_time) {
 #ifdef CONFIG_YAFFS_WINCE
-			yfsd_WinFileTimeNow(in->win_mtime);
+				yfsd_win_file_time_now(in->win_mtime);
 #else
 
-			in->yst_mtime = Y_CURRENT_TIME;
+				in->yst_mtime = Y_CURRENT_TIME;
 
 #endif
-		}
+			}
 
-		retVal = (yaffs_UpdateObjectHeader(in, NULL, 0, 0, 0) >=
-			0) ? YAFFS_OK : YAFFS_FAIL;
+			retVal = (yaffs_update_oh(in, NULL, 0, 0, 0, NULL) >=
+				0) ? YAFFS_OK : YAFFS_FAIL;
+		}
 	} else {
 		retVal = YAFFS_OK;
 	}
@@ -5072,60 +3874,56 @@ int yaffs_FlushFile(yaffs_Object *in, int updateTime)
 
 }
 
-static int yaffs_DoGenericObjectDeletion(yaffs_Object *in)
+static int yaffs_generic_obj_del(yaffs_obj_t *in)
 {
 
 	/* First off, invalidate the file's data in the cache, without flushing. */
-	yaffs_InvalidateWholeChunkCache(in);
+	yaffs_invalidate_whole_cache(in);
 
-	if (in->myDev->isYaffs2 && (in->parent != in->myDev->deletedDir)) {
+	if (in->my_dev->param.is_yaffs2 && (in->parent != in->my_dev->del_dir)) {
 		/* Move to the unlinked directory so we have a record that it was deleted. */
-		yaffs_ChangeObjectName(in, in->myDev->deletedDir, _Y("deleted"), 0, 0);
+		yaffs_change_obj_name(in, in->my_dev->del_dir, _Y("deleted"), 0, 0);
 
 	}
 
-	yaffs_RemoveObjectFromDirectory(in);
-	yaffs_DeleteChunk(in->myDev, in->hdrChunk, 1, __LINE__);
-	in->hdrChunk = 0;
+	yaffs_remove_obj_from_dir(in);
+	yaffs_chunk_del(in->my_dev, in->hdr_chunk, 1, __LINE__);
+	in->hdr_chunk = 0;
 
-	yaffs_FreeObject(in);
+	yaffs_free_obj(in);
 	return YAFFS_OK;
 
 }
 
-/* yaffs_DeleteFile deletes the whole file data
+/* yaffs_del_file deletes the whole file data
  * and the inode associated with the file.
  * It does not delete the links associated with the file.
  */
-static int yaffs_UnlinkFileIfNeeded(yaffs_Object *in)
+static int yaffs_unlink_file_if_needed(yaffs_obj_t *in)
 {
 
 	int retVal;
 	int immediateDeletion = 0;
+	yaffs_dev_t *dev = in->my_dev;
 
-#ifdef __KERNEL__
-	if (!in->myInode)
+	if (!in->my_inode)
 		immediateDeletion = 1;
-#else
-	if (in->inUse <= 0)
-		immediateDeletion = 1;
-#endif
 
 	if (immediateDeletion) {
 		retVal =
-		    yaffs_ChangeObjectName(in, in->myDev->deletedDir,
+		    yaffs_change_obj_name(in, in->my_dev->del_dir,
 					   _Y("deleted"), 0, 0);
 		T(YAFFS_TRACE_TRACING,
 		  (TSTR("yaffs: immediate deletion of file %d" TENDSTR),
-		   in->objectId));
+		   in->obj_id));
 		in->deleted = 1;
-		in->myDev->nDeletedFiles++;
-		if (1 || in->myDev->isYaffs2)
-			yaffs_ResizeFile(in, 0);
-		yaffs_SoftDeleteFile(in);
+		in->my_dev->n_deleted_files++;
+		if (dev->param.disable_soft_del || dev->param.is_yaffs2)
+			yaffs_resize_file(in, 0);
+		yaffs_soft_del_file(in);
 	} else {
 		retVal =
-		    yaffs_ChangeObjectName(in, in->myDev->unlinkedDir,
+		    yaffs_change_obj_name(in, in->my_dev->unlinked_dir,
 					   _Y("unlinked"), 0, 0);
 	}
 
@@ -5133,81 +3931,96 @@ static int yaffs_UnlinkFileIfNeeded(yaffs_Object *in)
 	return retVal;
 }
 
-int yaffs_DeleteFile(yaffs_Object *in)
+int yaffs_del_file(yaffs_obj_t *in)
 {
 	int retVal = YAFFS_OK;
-	int deleted = in->deleted;
+	int deleted; /* Need to cache value on stack if in is freed */
+	yaffs_dev_t *dev = in->my_dev;
 
-	yaffs_ResizeFile(in, 0);
+	if (dev->param.disable_soft_del || dev->param.is_yaffs2)
+		yaffs_resize_file(in, 0);
 
-	if (in->nDataChunks > 0) {
+	if (in->n_data_chunks > 0) {
 		/* Use soft deletion if there is data in the file.
 		 * That won't be the case if it has been resized to zero.
 		 */
 		if (!in->unlinked)
-			retVal = yaffs_UnlinkFileIfNeeded(in);
+			retVal = yaffs_unlink_file_if_needed(in);
+
+		deleted = in->deleted;
 
 		if (retVal == YAFFS_OK && in->unlinked && !in->deleted) {
 			in->deleted = 1;
 			deleted = 1;
-			in->myDev->nDeletedFiles++;
-			yaffs_SoftDeleteFile(in);
+			in->my_dev->n_deleted_files++;
+			yaffs_soft_del_file(in);
 		}
 		return deleted ? YAFFS_OK : YAFFS_FAIL;
 	} else {
 		/* The file has no data chunks so we toss it immediately */
-		yaffs_FreeTnode(in->myDev, in->variant.fileVariant.top);
-		in->variant.fileVariant.top = NULL;
-		yaffs_DoGenericObjectDeletion(in);
+		yaffs_free_tnode(in->my_dev, in->variant.file_variant.top);
+		in->variant.file_variant.top = NULL;
+		yaffs_generic_obj_del(in);
 
 		return YAFFS_OK;
 	}
 }
 
-static int yaffs_DeleteDirectory(yaffs_Object *in)
+static int yaffs_is_non_empty_dir(yaffs_obj_t *obj)
 {
-	/* First check that the directory is empty. */
-	if (ylist_empty(&in->variant.directoryVariant.children))
-		return yaffs_DoGenericObjectDeletion(in);
+	return (obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) &&
+		!(ylist_empty(&obj->variant.dir_variant.children));
+}
 
-	return YAFFS_FAIL;
+static int yaffs_del_dir(yaffs_obj_t *obj)
+{
+	/* First check that the directory is empty. */
+	if (yaffs_is_non_empty_dir(obj))
+		return YAFFS_FAIL;
 
+	return yaffs_generic_obj_del(obj);
 }
 
-static int yaffs_DeleteSymLink(yaffs_Object *in)
+static int yaffs_del_symlink(yaffs_obj_t *in)
 {
-	YFREE(in->variant.symLinkVariant.alias);
+	if(in->variant.symlink_variant.alias)
+		YFREE(in->variant.symlink_variant.alias);
+	in->variant.symlink_variant.alias=NULL;
 
-	return yaffs_DoGenericObjectDeletion(in);
+	return yaffs_generic_obj_del(in);
 }
 
-static int yaffs_DeleteHardLink(yaffs_Object *in)
+static int yaffs_del_link(yaffs_obj_t *in)
 {
 	/* remove this hardlink from the list assocaited with the equivalent
 	 * object
 	 */
-	ylist_del_init(&in->hardLinks);
-	return yaffs_DoGenericObjectDeletion(in);
+	ylist_del_init(&in->hard_links);
+	return yaffs_generic_obj_del(in);
 }
 
-int yaffs_DeleteObject(yaffs_Object *obj)
+int yaffs_del_obj(yaffs_obj_t *obj)
 {
 int retVal = -1;
-	switch (obj->variantType) {
+	switch (obj->variant_type) {
 	case YAFFS_OBJECT_TYPE_FILE:
-		retVal = yaffs_DeleteFile(obj);
+		retVal = yaffs_del_file(obj);
 		break;
 	case YAFFS_OBJECT_TYPE_DIRECTORY:
-		return yaffs_DeleteDirectory(obj);
+		if(!ylist_empty(&obj->variant.dir_variant.dirty)){
+			T(YAFFS_TRACE_BACKGROUND, (TSTR("Remove object %d from dirty directories" TENDSTR),obj->obj_id));
+			ylist_del_init(&obj->variant.dir_variant.dirty);
+		}
+		return yaffs_del_dir(obj);
 		break;
 	case YAFFS_OBJECT_TYPE_SYMLINK:
-		retVal = yaffs_DeleteSymLink(obj);
+		retVal = yaffs_del_symlink(obj);
 		break;
 	case YAFFS_OBJECT_TYPE_HARDLINK:
-		retVal = yaffs_DeleteHardLink(obj);
+		retVal = yaffs_del_link(obj);
 		break;
 	case YAFFS_OBJECT_TYPE_SPECIAL:
-		retVal = yaffs_DoGenericObjectDeletion(obj);
+		retVal = yaffs_generic_obj_del(obj);
 		break;
 	case YAFFS_OBJECT_TYPE_UNKNOWN:
 		retVal = 0;
@@ -5217,22 +4030,20 @@ int retVal = -1;
 	return retVal;
 }
 
-static int yaffs_UnlinkWorker(yaffs_Object *obj)
+static int yaffs_unlink_worker(yaffs_obj_t *obj)
 {
 
 	int immediateDeletion = 0;
 
-#ifdef __KERNEL__
-	if (!obj->myInode)
+	if (!obj->my_inode)
 		immediateDeletion = 1;
-#else
-	if (obj->inUse <= 0)
-		immediateDeletion = 1;
-#endif
 
-	if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
-		return yaffs_DeleteHardLink(obj);
-	} else if (!ylist_empty(&obj->hardLinks)) {
+	if(obj)
+		yaffs_update_parent(obj->parent);
+
+	if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) {
+		return yaffs_del_link(obj);
+	} else if (!ylist_empty(&obj->hard_links)) {
 		/* Curve ball: We're unlinking an object that has a hardlink.
 		 *
 		 * This problem arises because we are not strictly following
@@ -5242,79 +4053,85 @@ static int yaffs_UnlinkWorker(yaffs_Object *obj)
 		 * Instead, we do the following:
 		 * - Select a hardlink.
 		 * - Unhook it from the hard links
-		 * - Unhook it from its parent directory (so that the rename can work)
+		 * - Move it from its parent directory (so that the rename can work)
 		 * - Rename the object to the hardlink's name.
 		 * - Delete the hardlink
 		 */
 
-		yaffs_Object *hl;
+		yaffs_obj_t *hl;
+		yaffs_obj_t *parent;
 		int retVal;
 		YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
 
-		hl = ylist_entry(obj->hardLinks.next, yaffs_Object, hardLinks);
+		hl = ylist_entry(obj->hard_links.next, yaffs_obj_t, hard_links);
 
-		ylist_del_init(&hl->hardLinks);
-		ylist_del_init(&hl->siblings);
+		yaffs_get_obj_name(hl, name, YAFFS_MAX_NAME_LENGTH + 1);
+		parent = hl->parent;
 
-		yaffs_GetObjectName(hl, name, YAFFS_MAX_NAME_LENGTH + 1);
+		ylist_del_init(&hl->hard_links);
 
-		retVal = yaffs_ChangeObjectName(obj, hl->parent, name, 0, 0);
+ 		yaffs_add_obj_to_dir(obj->my_dev->unlinked_dir, hl);
+
+		retVal = yaffs_change_obj_name(obj,parent, name, 0, 0);
 
 		if (retVal == YAFFS_OK)
-			retVal = yaffs_DoGenericObjectDeletion(hl);
+			retVal = yaffs_generic_obj_del(hl);
 
 		return retVal;
 
 	} else if (immediateDeletion) {
-		switch (obj->variantType) {
+		switch (obj->variant_type) {
 		case YAFFS_OBJECT_TYPE_FILE:
-			return yaffs_DeleteFile(obj);
+			return yaffs_del_file(obj);
 			break;
 		case YAFFS_OBJECT_TYPE_DIRECTORY:
-			return yaffs_DeleteDirectory(obj);
+			ylist_del_init(&obj->variant.dir_variant.dirty);
+			return yaffs_del_dir(obj);
 			break;
 		case YAFFS_OBJECT_TYPE_SYMLINK:
-			return yaffs_DeleteSymLink(obj);
+			return yaffs_del_symlink(obj);
 			break;
 		case YAFFS_OBJECT_TYPE_SPECIAL:
-			return yaffs_DoGenericObjectDeletion(obj);
+			return yaffs_generic_obj_del(obj);
 			break;
 		case YAFFS_OBJECT_TYPE_HARDLINK:
 		case YAFFS_OBJECT_TYPE_UNKNOWN:
 		default:
 			return YAFFS_FAIL;
 		}
-	} else
-		return yaffs_ChangeObjectName(obj, obj->myDev->unlinkedDir,
+	} else if(yaffs_is_non_empty_dir(obj))
+		return YAFFS_FAIL;
+	else
+		return yaffs_change_obj_name(obj, obj->my_dev->unlinked_dir,
 					   _Y("unlinked"), 0, 0);
 }
 
 
-static int yaffs_UnlinkObject(yaffs_Object *obj)
+static int yaffs_unlink_obj(yaffs_obj_t *obj)
 {
 
-	if (obj && obj->unlinkAllowed)
-		return yaffs_UnlinkWorker(obj);
+	if (obj && obj->unlink_allowed)
+		return yaffs_unlink_worker(obj);
 
 	return YAFFS_FAIL;
 
 }
-int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name)
+int yaffs_unlinker(yaffs_obj_t *dir, const YCHAR *name)
 {
-	yaffs_Object *obj;
+	yaffs_obj_t *obj;
 
-	obj = yaffs_FindObjectByName(dir, name);
-	return yaffs_UnlinkObject(obj);
+	obj = yaffs_find_by_name(dir, name);
+	return yaffs_unlink_obj(obj);
 }
 
 /*----------------------- Initialisation Scanning ---------------------- */
 
-static void yaffs_HandleShadowedObject(yaffs_Device *dev, int objId,
-				int backwardScanning)
+void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id,
+				int backward_scanning)
 {
-	yaffs_Object *obj;
+	yaffs_obj_t *obj;
 
-	if (!backwardScanning) {
+	if (!backward_scanning) {
 		/* Handle YAFFS1 forward scanning case
 		 * For YAFFS1 we always do the deletion
 		 */
@@ -5323,7 +4140,8 @@ static void yaffs_HandleShadowedObject(yaffs_Device *dev, int objId,
 		/* Handle YAFFS2 case (backward scanning)
 		 * If the shadowed object exists then ignore.
 		 */
-		if (yaffs_FindObjectByNumber(dev, objId))
+		obj = yaffs_find_by_number(dev, obj_id);
+		if(obj)
 			return;
 	}
 
@@ -5331,567 +4149,225 @@ static void yaffs_HandleShadowedObject(yaffs_Device *dev, int objId,
 	 * We put it in unlinked dir to be cleaned up after the scanning
 	 */
 	obj =
-	    yaffs_FindOrCreateObjectByNumber(dev, objId,
+	    yaffs_find_or_create_by_number(dev, obj_id,
 					     YAFFS_OBJECT_TYPE_FILE);
 	if (!obj)
 		return;
-	yaffs_AddObjectToDirectory(dev->unlinkedDir, obj);
-	obj->variant.fileVariant.shrinkSize = 0;
+	obj->is_shadowed = 1;
+	yaffs_add_obj_to_dir(dev->unlinked_dir, obj);
+	obj->variant.file_variant.shrink_size = 0;
 	obj->valid = 1;		/* So that we don't read any other info for this file */
 
 }
 
-typedef struct {
-	int seq;
-	int block;
-} yaffs_BlockIndex;
-
 
-static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList)
+void yaffs_link_fixup(yaffs_dev_t *dev, yaffs_obj_t *hard_list)
 {
-	yaffs_Object *hl;
-	yaffs_Object *in;
+	yaffs_obj_t *hl;
+	yaffs_obj_t *in;
 
-	while (hardList) {
-		hl = hardList;
-		hardList = (yaffs_Object *) (hardList->hardLinks.next);
+	while (hard_list) {
+		hl = hard_list;
+		hard_list = (yaffs_obj_t *) (hard_list->hard_links.next);
 
-		in = yaffs_FindObjectByNumber(dev,
-					      hl->variant.hardLinkVariant.
-					      equivalentObjectId);
+		in = yaffs_find_by_number(dev,
+					      hl->variant.hardlink_variant.
+					      equiv_id);
 
 		if (in) {
 			/* Add the hardlink pointers */
-			hl->variant.hardLinkVariant.equivalentObject = in;
-			ylist_add(&hl->hardLinks, &in->hardLinks);
+			hl->variant.hardlink_variant.equiv_obj = in;
+			ylist_add(&hl->hard_links, &in->hard_links);
 		} else {
 			/* Todo Need to report/handle this better.
 			 * Got a problem... hardlink to a non-existant object
 			 */
-			hl->variant.hardLinkVariant.equivalentObject = NULL;
-			YINIT_LIST_HEAD(&hl->hardLinks);
+			hl->variant.hardlink_variant.equiv_obj = NULL;
+			YINIT_LIST_HEAD(&hl->hard_links);
 
 		}
 	}
 }
 
 
-
-
-
-static int ybicmp(const void *a, const void *b)
-{
-	register int aseq = ((yaffs_BlockIndex *)a)->seq;
-	register int bseq = ((yaffs_BlockIndex *)b)->seq;
-	register int ablock = ((yaffs_BlockIndex *)a)->block;
-	register int bblock = ((yaffs_BlockIndex *)b)->block;
-	if (aseq == bseq)
-		return ablock - bblock;
-	else
-		return aseq - bseq;
-}
-
-
-struct yaffs_ShadowFixerStruct {
-	int objectId;
-	int shadowedId;
-	struct yaffs_ShadowFixerStruct *next;
-};
-
-
-static void yaffs_StripDeletedObjects(yaffs_Device *dev)
+static void yaffs_strip_deleted_objs(yaffs_dev_t *dev)
 {
 	/*
 	*  Sort out state of unlinked and deleted objects after scanning.
 	*/
 	struct ylist_head *i;
 	struct ylist_head *n;
-	yaffs_Object *l;
+	yaffs_obj_t *l;
+
+	if (dev->read_only)
+		return;
 
 	/* Soft delete all the unlinked files */
 	ylist_for_each_safe(i, n,
-		&dev->unlinkedDir->variant.directoryVariant.children) {
+		&dev->unlinked_dir->variant.dir_variant.children) {
 		if (i) {
-			l = ylist_entry(i, yaffs_Object, siblings);
-			yaffs_DeleteObject(l);
+			l = ylist_entry(i, yaffs_obj_t, siblings);
+			yaffs_del_obj(l);
 		}
 	}
 
 	ylist_for_each_safe(i, n,
-		&dev->deletedDir->variant.directoryVariant.children) {
+		&dev->del_dir->variant.dir_variant.children) {
 		if (i) {
-			l = ylist_entry(i, yaffs_Object, siblings);
-			yaffs_DeleteObject(l);
+			l = ylist_entry(i, yaffs_obj_t, siblings);
+			yaffs_del_obj(l);
 		}
 	}
 
 }
 
-static int yaffs_Scan(yaffs_Device *dev)
+/*
+ * This code iterates through all the objects making sure that they are rooted.
+ * Any unrooted objects are re-rooted in lost+found.
+ * An object needs to be in one of:
+ * - Directly under deleted, unlinked
+ * - Directly or indirectly under root.
+ *
+ * Note:
+ *  This code assumes that we don't ever change the current relationships between
+ *  directories:
+ *   root_dir->parent == unlinked_dir->parent == del_dir->parent == NULL
+ *   lostNfound->parent == root_dir
+ *
+ * This fixes the problem where directories might have inadvertently been deleted
+ * leaving the object "hanging" without being rooted in the directory tree.
+ */
+ 
+static int yaffs_has_null_parent(yaffs_dev_t *dev, yaffs_obj_t *obj)
 {
-	yaffs_ExtendedTags tags;
-	int blk;
-	int blockIterator;
-	int startIterator;
-	int endIterator;
-	int result;
-
-	int chunk;
-	int c;
-	int deleted;
-	yaffs_BlockState state;
-	yaffs_Object *hardList = NULL;
-	yaffs_BlockInfo *bi;
-	__u32 sequenceNumber;
-	yaffs_ObjectHeader *oh;
-	yaffs_Object *in;
-	yaffs_Object *parent;
-
-	int alloc_failed = 0;
-
-	struct yaffs_ShadowFixerStruct *shadowFixerList = NULL;
-
-
-	__u8 *chunkData;
-
-
-
-	T(YAFFS_TRACE_SCAN,
-	  (TSTR("yaffs_Scan starts  intstartblk %d intendblk %d..." TENDSTR),
-	   dev->internalStartBlock, dev->internalEndBlock));
-
-	chunkData = yaffs_GetTempBuffer(dev, __LINE__);
-
-	dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER;
-
-	/* Scan all the blocks to determine their state */
-	for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) {
-		bi = yaffs_GetBlockInfo(dev, blk);
-		yaffs_ClearChunkBits(dev, blk);
-		bi->pagesInUse = 0;
-		bi->softDeletions = 0;
-
-		yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber);
-
-		bi->blockState = state;
-		bi->sequenceNumber = sequenceNumber;
-
-		if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK)
-			bi->blockState = state = YAFFS_BLOCK_STATE_DEAD;
-
-		T(YAFFS_TRACE_SCAN_DEBUG,
-		  (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
-		   state, sequenceNumber));
-
-		if (state == YAFFS_BLOCK_STATE_DEAD) {
-			T(YAFFS_TRACE_BAD_BLOCKS,
-			  (TSTR("block %d is bad" TENDSTR), blk));
-		} else if (state == YAFFS_BLOCK_STATE_EMPTY) {
-			T(YAFFS_TRACE_SCAN_DEBUG,
-			  (TSTR("Block empty " TENDSTR)));
-			dev->nErasedBlocks++;
-			dev->nFreeChunks += dev->nChunksPerBlock;
-		}
-	}
-
-	startIterator = dev->internalStartBlock;
-	endIterator = dev->internalEndBlock;
-
-	/* For each block.... */
-	for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator;
-	     blockIterator++) {
-
-		YYIELD();
-
-		YYIELD();
-
-		blk = blockIterator;
-
-		bi = yaffs_GetBlockInfo(dev, blk);
-		state = bi->blockState;
-
-		deleted = 0;
-
-		/* For each chunk in each block that needs scanning....*/
-		for (c = 0; !alloc_failed && c < dev->nChunksPerBlock &&
-		     state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) {
-			/* Read the tags and decide what to do */
-			chunk = blk * dev->nChunksPerBlock + c;
-
-			result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL,
-							&tags);
-
-			/* Let's have a good look at this chunk... */
-
-			if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED || tags.chunkDeleted) {
-				/* YAFFS1 only...
-				 * A deleted chunk
-				 */
-				deleted++;
-				dev->nFreeChunks++;
-				/*T((" %d %d deleted\n",blk,c)); */
-			} else if (!tags.chunkUsed) {
-				/* An unassigned chunk in the block
-				 * This means that either the block is empty or
-				 * this is the one being allocated from
-				 */
-
-				if (c == 0) {
-					/* We're looking at the first chunk in the block so the block is unused */
-					state = YAFFS_BLOCK_STATE_EMPTY;
-					dev->nErasedBlocks++;
-				} else {
-					/* this is the block being allocated from */
-					T(YAFFS_TRACE_SCAN,
-					  (TSTR
-					   (" Allocating from %d %d" TENDSTR),
-					   blk, c));
-					state = YAFFS_BLOCK_STATE_ALLOCATING;
-					dev->allocationBlock = blk;
-					dev->allocationPage = c;
-					dev->allocationBlockFinder = blk;
-					/* Set it to here to encourage the allocator to go forth from here. */
-
-				}
-
-				dev->nFreeChunks += (dev->nChunksPerBlock - c);
-			} else if (tags.chunkId > 0) {
-				/* chunkId > 0 so it is a data chunk... */
-				unsigned int endpos;
-
-				yaffs_SetChunkBit(dev, blk, c);
-				bi->pagesInUse++;
-
-				in = yaffs_FindOrCreateObjectByNumber(dev,
-								      tags.
-								      objectId,
-								      YAFFS_OBJECT_TYPE_FILE);
-				/* PutChunkIntoFile checks for a clash (two data chunks with
-				 * the same chunkId).
-				 */
+	return (obj == dev->del_dir ||
+		obj == dev->unlinked_dir||
+		obj == dev->root_dir);
+}
 
-				if (!in)
-					alloc_failed = 1;
+static void yaffs_fix_hanging_objs(yaffs_dev_t *dev)
+{
+	yaffs_obj_t *obj;
+	yaffs_obj_t *parent;
+	int i;
+	struct ylist_head *lh;
+	struct ylist_head *n;
+	int depthLimit;
+	int hanging;
 
-				if (in) {
-					if (!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk, 1))
-						alloc_failed = 1;
-				}
+	if (dev->read_only)
+		return;
 
-				endpos =
-				    (tags.chunkId - 1) * dev->nDataBytesPerChunk +
-				    tags.byteCount;
-				if (in &&
-				    in->variantType == YAFFS_OBJECT_TYPE_FILE
-				    && in->variant.fileVariant.scannedFileSize <
-				    endpos) {
-					in->variant.fileVariant.
-					    scannedFileSize = endpos;
-					if (!dev->useHeaderFileSize) {
-						in->variant.fileVariant.
-						    fileSize =
-						    in->variant.fileVariant.
-						    scannedFileSize;
-					}
+	/* Iterate through the objects in each hash entry,
+	 * looking at each object.
+	 * Make sure it is rooted.
+	 */
 
+	for (i = 0; i <  YAFFS_NOBJECT_BUCKETS; i++) {
+		ylist_for_each_safe(lh, n, &dev->obj_bucket[i].list) {
+			if (lh) {
+				obj = ylist_entry(lh, yaffs_obj_t, hash_link);
+				parent= obj->parent;
+				
+				if(yaffs_has_null_parent(dev,obj)){
+					/* These directories are not hanging */
+					hanging = 0;
 				}
-				/* T((" %d %d data %d %d\n",blk,c,tags.objectId,tags.chunkId));   */
-			} else {
-				/* chunkId == 0, so it is an ObjectHeader.
-				 * Thus, we read in the object header and make the object
-				 */
-				yaffs_SetChunkBit(dev, blk, c);
-				bi->pagesInUse++;
-
-				result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk,
-								chunkData,
-								NULL);
-
-				oh = (yaffs_ObjectHeader *) chunkData;
-
-				in = yaffs_FindObjectByNumber(dev,
-							      tags.objectId);
-				if (in && in->variantType != oh->type) {
-					/* This should not happen, but somehow
-					 * Wev'e ended up with an objectId that has been reused but not yet
-					 * deleted, and worse still it has changed type. Delete the old object.
+				else if(!parent || parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
+					hanging = 1;
+				else if(yaffs_has_null_parent(dev,parent))
+					hanging = 0;
+				else {
+					/*
+					 * Need to follow the parent chain to see if it is hanging.
 					 */
-
-					yaffs_DeleteObject(in);
-
-					in = 0;
-				}
-
-				in = yaffs_FindOrCreateObjectByNumber(dev,
-								      tags.
-								      objectId,
-								      oh->type);
-
-				if (!in)
-					alloc_failed = 1;
-
-				if (in && oh->shadowsObject > 0) {
-
-					struct yaffs_ShadowFixerStruct *fixer;
-					fixer = YMALLOC(sizeof(struct yaffs_ShadowFixerStruct));
-					if (fixer) {
-						fixer->next = shadowFixerList;
-						shadowFixerList = fixer;
-						fixer->objectId = tags.objectId;
-						fixer->shadowedId = oh->shadowsObject;
+					hanging = 0;
+					depthLimit=100;
+
+					while(parent != dev->root_dir &&
+						parent->parent &&
+						parent->parent->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY &&
+						depthLimit > 0){
+						parent = parent->parent;
+						depthLimit--;
 					}
-
+					if(parent != dev->root_dir)
+						hanging = 1;
 				}
-
-				if (in && in->valid) {
-					/* We have already filled this one. We have a duplicate and need to resolve it. */
-
-					unsigned existingSerial = in->serial;
-					unsigned newSerial = tags.serialNumber;
-
-					if (((existingSerial + 1) & 3) == newSerial) {
-						/* Use new one - destroy the exisiting one */
-						yaffs_DeleteChunk(dev,
-								  in->hdrChunk,
-								  1, __LINE__);
-						in->valid = 0;
-					} else {
-						/* Use existing - destroy this one. */
-						yaffs_DeleteChunk(dev, chunk, 1,
-								  __LINE__);
-					}
-				}
-
-				if (in && !in->valid &&
-				    (tags.objectId == YAFFS_OBJECTID_ROOT ||
-				     tags.objectId == YAFFS_OBJECTID_LOSTNFOUND)) {
-					/* We only load some info, don't fiddle with directory structure */
-					in->valid = 1;
-					in->variantType = oh->type;
-
-					in->yst_mode = oh->yst_mode;
-#ifdef CONFIG_YAFFS_WINCE
-					in->win_atime[0] = oh->win_atime[0];
-					in->win_ctime[0] = oh->win_ctime[0];
-					in->win_mtime[0] = oh->win_mtime[0];
-					in->win_atime[1] = oh->win_atime[1];
-					in->win_ctime[1] = oh->win_ctime[1];
-					in->win_mtime[1] = oh->win_mtime[1];
-#else
-					in->yst_uid = oh->yst_uid;
-					in->yst_gid = oh->yst_gid;
-					in->yst_atime = oh->yst_atime;
-					in->yst_mtime = oh->yst_mtime;
-					in->yst_ctime = oh->yst_ctime;
-					in->yst_rdev = oh->yst_rdev;
-#endif
-					in->hdrChunk = chunk;
-					in->serial = tags.serialNumber;
-
-				} else if (in && !in->valid) {
-					/* we need to load this info */
-
-					in->valid = 1;
-					in->variantType = oh->type;
-
-					in->yst_mode = oh->yst_mode;
-#ifdef CONFIG_YAFFS_WINCE
-					in->win_atime[0] = oh->win_atime[0];
-					in->win_ctime[0] = oh->win_ctime[0];
-					in->win_mtime[0] = oh->win_mtime[0];
-					in->win_atime[1] = oh->win_atime[1];
-					in->win_ctime[1] = oh->win_ctime[1];
-					in->win_mtime[1] = oh->win_mtime[1];
-#else
-					in->yst_uid = oh->yst_uid;
-					in->yst_gid = oh->yst_gid;
-					in->yst_atime = oh->yst_atime;
-					in->yst_mtime = oh->yst_mtime;
-					in->yst_ctime = oh->yst_ctime;
-					in->yst_rdev = oh->yst_rdev;
-#endif
-					in->hdrChunk = chunk;
-					in->serial = tags.serialNumber;
-
-					yaffs_SetObjectName(in, oh->name);
-					in->dirty = 0;
-
-					/* directory stuff...
-					 * hook up to parent
-					 */
-
-					parent =
-					    yaffs_FindOrCreateObjectByNumber
-					    (dev, oh->parentObjectId,
-					     YAFFS_OBJECT_TYPE_DIRECTORY);
-					if (!parent)
-						alloc_failed = 1;
-					if (parent && parent->variantType ==
-					    YAFFS_OBJECT_TYPE_UNKNOWN) {
-						/* Set up as a directory */
-						parent->variantType =
-							YAFFS_OBJECT_TYPE_DIRECTORY;
-						YINIT_LIST_HEAD(&parent->variant.
-								directoryVariant.
-								children);
-					} else if (!parent || parent->variantType !=
-						   YAFFS_OBJECT_TYPE_DIRECTORY) {
-						/* Hoosterman, another problem....
-						 * We're trying to use a non-directory as a directory
-						 */
-
-						T(YAFFS_TRACE_ERROR,
-						  (TSTR
-						   ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
-						    TENDSTR)));
-						parent = dev->lostNFoundDir;
-					}
-
-					yaffs_AddObjectToDirectory(parent, in);
-
-					if (0 && (parent == dev->deletedDir ||
-						  parent == dev->unlinkedDir)) {
-						in->deleted = 1;	/* If it is unlinked at start up then it wants deleting */
-						dev->nDeletedFiles++;
-					}
-					/* Note re hardlinks.
-					 * Since we might scan a hardlink before its equivalent object is scanned
-					 * we put them all in a list.
-					 * After scanning is complete, we should have all the objects, so we run through this
-					 * list and fix up all the chains.
-					 */
-
-					switch (in->variantType) {
-					case YAFFS_OBJECT_TYPE_UNKNOWN:
-						/* Todo got a problem */
-						break;
-					case YAFFS_OBJECT_TYPE_FILE:
-						if (dev->useHeaderFileSize)
-
-							in->variant.fileVariant.
-							    fileSize =
-							    oh->fileSize;
-
-						break;
-					case YAFFS_OBJECT_TYPE_HARDLINK:
-						in->variant.hardLinkVariant.
-							equivalentObjectId =
-							oh->equivalentObjectId;
-						in->hardLinks.next =
-							(struct ylist_head *)
-							hardList;
-						hardList = in;
-						break;
-					case YAFFS_OBJECT_TYPE_DIRECTORY:
-						/* Do nothing */
-						break;
-					case YAFFS_OBJECT_TYPE_SPECIAL:
-						/* Do nothing */
-						break;
-					case YAFFS_OBJECT_TYPE_SYMLINK:
-						in->variant.symLinkVariant.alias =
-						    yaffs_CloneString(oh->alias);
-						if (!in->variant.symLinkVariant.alias)
-							alloc_failed = 1;
-						break;
-					}
-
-/*
-					if (parent == dev->deletedDir) {
-						yaffs_DestroyObject(in);
-						bi->hasShrinkHeader = 1;
-					}
-*/
+				if(hanging){
+					T(YAFFS_TRACE_SCAN,
+					  (TSTR("Hanging object %d moved to lost and found" TENDSTR),
+					  	obj->obj_id));
+					yaffs_add_obj_to_dir(dev->lost_n_found,obj);
 				}
 			}
 		}
-
-		if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
-			/* If we got this far while scanning, then the block is fully allocated.*/
-			state = YAFFS_BLOCK_STATE_FULL;
-		}
-
-		bi->blockState = state;
-
-		/* Now let's see if it was dirty */
-		if (bi->pagesInUse == 0 &&
-		    !bi->hasShrinkHeader &&
-		    bi->blockState == YAFFS_BLOCK_STATE_FULL) {
-			yaffs_BlockBecameDirty(dev, blk);
-		}
-
 	}
+}
 
 
-	/* Ok, we've done all the scanning.
-	 * Fix up the hard link chains.
-	 * We should now have scanned all the objects, now it's time to add these
-	 * hardlinks.
-	 */
+/*
+ * Delete directory contents for cleaning up lost and found.
+ */
+static void yaffs_del_dir_contents(yaffs_obj_t *dir)
+{
+	yaffs_obj_t *obj;
+	struct ylist_head *lh;
+	struct ylist_head *n;
 
-	yaffs_HardlinkFixup(dev, hardList);
+	if(dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
+		YBUG();
+	
+	ylist_for_each_safe(lh, n, &dir->variant.dir_variant.children) {
+		if (lh) {
+			obj = ylist_entry(lh, yaffs_obj_t, siblings);
+			if(obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY)
+				yaffs_del_dir_contents(obj);
 
-	/* Fix up any shadowed objects */
-	{
-		struct yaffs_ShadowFixerStruct *fixer;
-		yaffs_Object *obj;
+			T(YAFFS_TRACE_SCAN,
+				(TSTR("Deleting lost_found object %d" TENDSTR),
+				obj->obj_id));
 
-		while (shadowFixerList) {
-			fixer = shadowFixerList;
-			shadowFixerList = fixer->next;
-			/* Complete the rename transaction by deleting the shadowed object
-			 * then setting the object header to unshadowed.
+			/* Need to use UnlinkObject since Delete would not handle
+			 * hardlinked objects correctly.
 			 */
-			obj = yaffs_FindObjectByNumber(dev, fixer->shadowedId);
-			if (obj)
-				yaffs_DeleteObject(obj);
-
-			obj = yaffs_FindObjectByNumber(dev, fixer->objectId);
-
-			if (obj)
-				yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0);
-
-			YFREE(fixer);
+			yaffs_unlink_obj(obj); 
 		}
 	}
+			
+}
 
-	yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
-
-	if (alloc_failed)
-		return YAFFS_FAIL;
-
-	T(YAFFS_TRACE_SCAN, (TSTR("yaffs_Scan ends" TENDSTR)));
-
-
-	return YAFFS_OK;
+static void yaffs_empty_l_n_f(yaffs_dev_t *dev)
+{
+	yaffs_del_dir_contents(dev->lost_n_found);
 }
 
-static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in)
+static void yaffs_check_obj_details_loaded(yaffs_obj_t *in)
 {
 	__u8 *chunkData;
-	yaffs_ObjectHeader *oh;
-	yaffs_Device *dev;
-	yaffs_ExtendedTags tags;
+	yaffs_obj_header *oh;
+	yaffs_dev_t *dev;
+	yaffs_ext_tags tags;
 	int result;
 	int alloc_failed = 0;
 
 	if (!in)
 		return;
 
-	dev = in->myDev;
+	dev = in->my_dev;
 
 #if 0
 	T(YAFFS_TRACE_SCAN, (TSTR("details for object %d %s loaded" TENDSTR),
-		in->objectId,
-		in->lazyLoaded ? "not yet" : "already"));
+		in->obj_id,
+		in->lazy_loaded ? "not yet" : "already"));
 #endif
 
-	if (in->lazyLoaded && in->hdrChunk > 0) {
-		in->lazyLoaded = 0;
-		chunkData = yaffs_GetTempBuffer(dev, __LINE__);
+	if (in->lazy_loaded && in->hdr_chunk > 0) {
+		in->lazy_loaded = 0;
+		chunkData = yaffs_get_temp_buffer(dev, __LINE__);
 
-		result = yaffs_ReadChunkWithTagsFromNAND(dev, in->hdrChunk, chunkData, &tags);
-		oh = (yaffs_ObjectHeader *) chunkData;
+		result = yaffs_rd_chunk_tags_nand(dev, in->hdr_chunk, chunkData, &tags);
+		oh = (yaffs_obj_header *) chunkData;
 
 		in->yst_mode = oh->yst_mode;
 #ifdef CONFIG_YAFFS_WINCE
@@ -5910,786 +4386,106 @@ static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in)
 		in->yst_rdev = oh->yst_rdev;
 
 #endif
-		yaffs_SetObjectName(in, oh->name);
+		yaffs_set_obj_name_from_oh(in, oh);
 
-		if (in->variantType == YAFFS_OBJECT_TYPE_SYMLINK) {
-			in->variant.symLinkVariant.alias =
-						    yaffs_CloneString(oh->alias);
-			if (!in->variant.symLinkVariant.alias)
+		if (in->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) {
+			in->variant.symlink_variant.alias =
+						    yaffs_clone_str(oh->alias);
+			if (!in->variant.symlink_variant.alias)
 				alloc_failed = 1; /* Not returned to caller */
 		}
 
-		yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
-	}
-}
-
-static int yaffs_ScanBackwards(yaffs_Device *dev)
-{
-	yaffs_ExtendedTags tags;
-	int blk;
-	int blockIterator;
-	int startIterator;
-	int endIterator;
-	int nBlocksToScan = 0;
-
-	int chunk;
-	int result;
-	int c;
-	int deleted;
-	yaffs_BlockState state;
-	yaffs_Object *hardList = NULL;
-	yaffs_BlockInfo *bi;
-	__u32 sequenceNumber;
-	yaffs_ObjectHeader *oh;
-	yaffs_Object *in;
-	yaffs_Object *parent;
-	int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
-	int itsUnlinked;
-	__u8 *chunkData;
-
-	int fileSize;
-	int isShrink;
-	int foundChunksInBlock;
-	int equivalentObjectId;
-	int alloc_failed = 0;
-
-
-	yaffs_BlockIndex *blockIndex = NULL;
-	int altBlockIndex = 0;
-
-	if (!dev->isYaffs2) {
-		T(YAFFS_TRACE_SCAN,
-		  (TSTR("yaffs_ScanBackwards is only for YAFFS2!" TENDSTR)));
-		return YAFFS_FAIL;
-	}
-
-	T(YAFFS_TRACE_SCAN,
-	  (TSTR
-	   ("yaffs_ScanBackwards starts  intstartblk %d intendblk %d..."
-	    TENDSTR), dev->internalStartBlock, dev->internalEndBlock));
-
-
-	dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER;
-
-	blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
-
-	if (!blockIndex) {
-		blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex));
-		altBlockIndex = 1;
-	}
-
-	if (!blockIndex) {
-		T(YAFFS_TRACE_SCAN,
-		  (TSTR("yaffs_Scan() could not allocate block index!" TENDSTR)));
-		return YAFFS_FAIL;
-	}
-
-	dev->blocksInCheckpoint = 0;
-
-	chunkData = yaffs_GetTempBuffer(dev, __LINE__);
-
-	/* Scan all the blocks to determine their state */
-	for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) {
-		bi = yaffs_GetBlockInfo(dev, blk);
-		yaffs_ClearChunkBits(dev, blk);
-		bi->pagesInUse = 0;
-		bi->softDeletions = 0;
-
-		yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber);
-
-		bi->blockState = state;
-		bi->sequenceNumber = sequenceNumber;
-
-		if (bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA)
-			bi->blockState = state = YAFFS_BLOCK_STATE_CHECKPOINT;
-		if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK)
-			bi->blockState = state = YAFFS_BLOCK_STATE_DEAD;
-
-		T(YAFFS_TRACE_SCAN_DEBUG,
-		  (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
-		   state, sequenceNumber));
-
-
-		if (state == YAFFS_BLOCK_STATE_CHECKPOINT) {
-			dev->blocksInCheckpoint++;
-
-		} else if (state == YAFFS_BLOCK_STATE_DEAD) {
-			T(YAFFS_TRACE_BAD_BLOCKS,
-			  (TSTR("block %d is bad" TENDSTR), blk));
-		} else if (state == YAFFS_BLOCK_STATE_EMPTY) {
-			T(YAFFS_TRACE_SCAN_DEBUG,
-			  (TSTR("Block empty " TENDSTR)));
-			dev->nErasedBlocks++;
-			dev->nFreeChunks += dev->nChunksPerBlock;
-		} else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
-
-			/* Determine the highest sequence number */
-			if (sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
-			    sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) {
-
-				blockIndex[nBlocksToScan].seq = sequenceNumber;
-				blockIndex[nBlocksToScan].block = blk;
-
-				nBlocksToScan++;
-
-				if (sequenceNumber >= dev->sequenceNumber)
-					dev->sequenceNumber = sequenceNumber;
-			} else {
-				/* TODO: Nasty sequence number! */
-				T(YAFFS_TRACE_SCAN,
-				  (TSTR
-				   ("Block scanning block %d has bad sequence number %d"
-				    TENDSTR), blk, sequenceNumber));
-
-			}
-		}
-	}
-
-	T(YAFFS_TRACE_SCAN,
-	(TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan));
-
-
-
-	YYIELD();
-
-	/* Sort the blocks */
-#ifndef CONFIG_YAFFS_USE_OWN_SORT
-	{
-		/* Use qsort now. */
-		yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), ybicmp);
-	}
-#else
-	{
-		/* Dungy old bubble sort... */
-
-		yaffs_BlockIndex temp;
-		int i;
-		int j;
-
-		for (i = 0; i < nBlocksToScan; i++)
-			for (j = i + 1; j < nBlocksToScan; j++)
-				if (blockIndex[i].seq > blockIndex[j].seq) {
-					temp = blockIndex[j];
-					blockIndex[j] = blockIndex[i];
-					blockIndex[i] = temp;
-				}
-	}
-#endif
-
-	YYIELD();
-
-	T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR)));
-
-	/* Now scan the blocks looking at the data. */
-	startIterator = 0;
-	endIterator = nBlocksToScan - 1;
-	T(YAFFS_TRACE_SCAN_DEBUG,
-	  (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan));
-
-	/* For each block.... backwards */
-	for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator;
-			blockIterator--) {
-		/* Cooperative multitasking! This loop can run for so
-		   long that watchdog timers expire. */
-		YYIELD();
-
-		/* get the block to scan in the correct order */
-		blk = blockIndex[blockIterator].block;
-
-		bi = yaffs_GetBlockInfo(dev, blk);
-
-
-		state = bi->blockState;
-
-		deleted = 0;
-
-		/* For each chunk in each block that needs scanning.... */
-		foundChunksInBlock = 0;
-		for (c = dev->nChunksPerBlock - 1;
-		     !alloc_failed && c >= 0 &&
-		     (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
-		      state == YAFFS_BLOCK_STATE_ALLOCATING); c--) {
-			/* Scan backwards...
-			 * Read the tags and decide what to do
-			 */
-
-			chunk = blk * dev->nChunksPerBlock + c;
-
-			result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL,
-							&tags);
-
-			/* Let's have a good look at this chunk... */
-
-			if (!tags.chunkUsed) {
-				/* An unassigned chunk in the block.
-				 * If there are used chunks after this one, then
-				 * it is a chunk that was skipped due to failing the erased
-				 * check. Just skip it so that it can be deleted.
-				 * But, more typically, We get here when this is an unallocated
-				 * chunk and his means that either the block is empty or
-				 * this is the one being allocated from
-				 */
-
-				if (foundChunksInBlock) {
-					/* This is a chunk that was skipped due to failing the erased check */
-				} else if (c == 0) {
-					/* We're looking at the first chunk in the block so the block is unused */
-					state = YAFFS_BLOCK_STATE_EMPTY;
-					dev->nErasedBlocks++;
-				} else {
-					if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
-					    state == YAFFS_BLOCK_STATE_ALLOCATING) {
-						if (dev->sequenceNumber == bi->sequenceNumber) {
-							/* this is the block being allocated from */
-
-							T(YAFFS_TRACE_SCAN,
-							  (TSTR
-							   (" Allocating from %d %d"
-							    TENDSTR), blk, c));
-
-							state = YAFFS_BLOCK_STATE_ALLOCATING;
-							dev->allocationBlock = blk;
-							dev->allocationPage = c;
-							dev->allocationBlockFinder = blk;
-						} else {
-							/* This is a partially written block that is not
-							 * the current allocation block. This block must have
-							 * had a write failure, so set up for retirement.
-							 */
-
-							 /* bi->needsRetiring = 1; ??? TODO */
-							 bi->gcPrioritise = 1;
-
-							 T(YAFFS_TRACE_ALWAYS,
-							 (TSTR("Partially written block %d detected" TENDSTR),
-							 blk));
-						}
-					}
-				}
-
-				dev->nFreeChunks++;
-
-			} else if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED) {
-				T(YAFFS_TRACE_SCAN,
-				  (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR),
-				  blk, c));
-
-				  dev->nFreeChunks++;
-
-			} else if (tags.chunkId > 0) {
-				/* chunkId > 0 so it is a data chunk... */
-				unsigned int endpos;
-				__u32 chunkBase =
-				    (tags.chunkId - 1) * dev->nDataBytesPerChunk;
-
-				foundChunksInBlock = 1;
-
-
-				yaffs_SetChunkBit(dev, blk, c);
-				bi->pagesInUse++;
-
-				in = yaffs_FindOrCreateObjectByNumber(dev,
-								      tags.
-								      objectId,
-								      YAFFS_OBJECT_TYPE_FILE);
-				if (!in) {
-					/* Out of memory */
-					alloc_failed = 1;
-				}
-
-				if (in &&
-				    in->variantType == YAFFS_OBJECT_TYPE_FILE
-				    && chunkBase <
-				    in->variant.fileVariant.shrinkSize) {
-					/* This has not been invalidated by a resize */
-					if (!yaffs_PutChunkIntoFile(in, tags.chunkId,
-							       chunk, -1)) {
-						alloc_failed = 1;
-					}
-
-					/* File size is calculated by looking at the data chunks if we have not
-					 * seen an object header yet. Stop this practice once we find an object header.
-					 */
-					endpos =
-					    (tags.chunkId -
-					     1) * dev->nDataBytesPerChunk +
-					    tags.byteCount;
-
-					if (!in->valid &&	/* have not got an object header yet */
-					    in->variant.fileVariant.
-					    scannedFileSize < endpos) {
-						in->variant.fileVariant.
-						    scannedFileSize = endpos;
-						in->variant.fileVariant.
-						    fileSize =
-						    in->variant.fileVariant.
-						    scannedFileSize;
-					}
-
-				} else if (in) {
-					/* This chunk has been invalidated by a resize, so delete */
-					yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
-
-				}
-			} else {
-				/* chunkId == 0, so it is an ObjectHeader.
-				 * Thus, we read in the object header and make the object
-				 */
-				foundChunksInBlock = 1;
-
-				yaffs_SetChunkBit(dev, blk, c);
-				bi->pagesInUse++;
-
-				oh = NULL;
-				in = NULL;
-
-				if (tags.extraHeaderInfoAvailable) {
-					in = yaffs_FindOrCreateObjectByNumber
-					    (dev, tags.objectId,
-					     tags.extraObjectType);
-					if (!in)
-						alloc_failed = 1;
-				}
-
-				if (!in ||
-#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD
-				    !in->valid ||
-#endif
-				    tags.extraShadows ||
-				    (!in->valid &&
-				    (tags.objectId == YAFFS_OBJECTID_ROOT ||
-				     tags.objectId == YAFFS_OBJECTID_LOSTNFOUND))) {
-
-					/* If we don't have  valid info then we need to read the chunk
-					 * TODO In future we can probably defer reading the chunk and
-					 * living with invalid data until needed.
-					 */
-
-					result = yaffs_ReadChunkWithTagsFromNAND(dev,
-									chunk,
-									chunkData,
-									NULL);
-
-					oh = (yaffs_ObjectHeader *) chunkData;
-
-					if (dev->inbandTags) {
-						/* Fix up the header if they got corrupted by inband tags */
-						oh->shadowsObject = oh->inbandShadowsObject;
-						oh->isShrink = oh->inbandIsShrink;
-					}
-
-					if (!in) {
-						in = yaffs_FindOrCreateObjectByNumber(dev, tags.objectId, oh->type);
-						if (!in)
-							alloc_failed = 1;
-					}
-
-				}
-
-				if (!in) {
-					/* TODO Hoosterman we have a problem! */
-					T(YAFFS_TRACE_ERROR,
-					  (TSTR
-					   ("yaffs tragedy: Could not make object for object  %d at chunk %d during scan"
-					    TENDSTR), tags.objectId, chunk));
-					continue;
-				}
-
-				if (in->valid) {
-					/* We have already filled this one.
-					 * We have a duplicate that will be discarded, but
-					 * we first have to suck out resize info if it is a file.
-					 */
-
-					if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) &&
-					     ((oh &&
-					       oh->type == YAFFS_OBJECT_TYPE_FILE) ||
-					      (tags.extraHeaderInfoAvailable  &&
-					       tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))) {
-						__u32 thisSize =
-						    (oh) ? oh->fileSize : tags.
-						    extraFileLength;
-						__u32 parentObjectId =
-						    (oh) ? oh->
-						    parentObjectId : tags.
-						    extraParentObjectId;
-
-
-						isShrink =
-						    (oh) ? oh->isShrink : tags.
-						    extraIsShrinkHeader;
-
-						/* If it is deleted (unlinked at start also means deleted)
-						 * we treat the file size as being zeroed at this point.
-						 */
-						if (parentObjectId ==
-						    YAFFS_OBJECTID_DELETED
-						    || parentObjectId ==
-						    YAFFS_OBJECTID_UNLINKED) {
-							thisSize = 0;
-							isShrink = 1;
-						}
-
-						if (isShrink &&
-						    in->variant.fileVariant.
-						    shrinkSize > thisSize) {
-							in->variant.fileVariant.
-							    shrinkSize =
-							    thisSize;
-						}
-
-						if (isShrink)
-							bi->hasShrinkHeader = 1;
-
-					}
-					/* Use existing - destroy this one. */
-					yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
-
-				}
-
-				if (!in->valid && in->variantType !=
-				    (oh ? oh->type : tags.extraObjectType))
-					T(YAFFS_TRACE_ERROR, (
-						TSTR("yaffs tragedy: Bad object type, "
-					    TCONT("%d != %d, for object %d at chunk ")
-					    TCONT("%d during scan")
-						TENDSTR), oh ?
-					    oh->type : tags.extraObjectType,
-					    in->variantType, tags.objectId,
-					    chunk));
-
-				if (!in->valid &&
-				    (tags.objectId == YAFFS_OBJECTID_ROOT ||
-				     tags.objectId ==
-				     YAFFS_OBJECTID_LOSTNFOUND)) {
-					/* We only load some info, don't fiddle with directory structure */
-					in->valid = 1;
-
-					if (oh) {
-						in->variantType = oh->type;
-
-						in->yst_mode = oh->yst_mode;
-#ifdef CONFIG_YAFFS_WINCE
-						in->win_atime[0] = oh->win_atime[0];
-						in->win_ctime[0] = oh->win_ctime[0];
-						in->win_mtime[0] = oh->win_mtime[0];
-						in->win_atime[1] = oh->win_atime[1];
-						in->win_ctime[1] = oh->win_ctime[1];
-						in->win_mtime[1] = oh->win_mtime[1];
-#else
-						in->yst_uid = oh->yst_uid;
-						in->yst_gid = oh->yst_gid;
-						in->yst_atime = oh->yst_atime;
-						in->yst_mtime = oh->yst_mtime;
-						in->yst_ctime = oh->yst_ctime;
-						in->yst_rdev = oh->yst_rdev;
-
-#endif
-					} else {
-						in->variantType = tags.extraObjectType;
-						in->lazyLoaded = 1;
-					}
-
-					in->hdrChunk = chunk;
-
-				} else if (!in->valid) {
-					/* we need to load this info */
-
-					in->valid = 1;
-					in->hdrChunk = chunk;
-
-					if (oh) {
-						in->variantType = oh->type;
-
-						in->yst_mode = oh->yst_mode;
-#ifdef CONFIG_YAFFS_WINCE
-						in->win_atime[0] = oh->win_atime[0];
-						in->win_ctime[0] = oh->win_ctime[0];
-						in->win_mtime[0] = oh->win_mtime[0];
-						in->win_atime[1] = oh->win_atime[1];
-						in->win_ctime[1] = oh->win_ctime[1];
-						in->win_mtime[1] = oh->win_mtime[1];
-#else
-						in->yst_uid = oh->yst_uid;
-						in->yst_gid = oh->yst_gid;
-						in->yst_atime = oh->yst_atime;
-						in->yst_mtime = oh->yst_mtime;
-						in->yst_ctime = oh->yst_ctime;
-						in->yst_rdev = oh->yst_rdev;
-#endif
-
-						if (oh->shadowsObject > 0)
-							yaffs_HandleShadowedObject(dev,
-									   oh->
-									   shadowsObject,
-									   1);
-
-
-						yaffs_SetObjectName(in, oh->name);
-						parent =
-						    yaffs_FindOrCreateObjectByNumber
-							(dev, oh->parentObjectId,
-							 YAFFS_OBJECT_TYPE_DIRECTORY);
-
-						 fileSize = oh->fileSize;
-						 isShrink = oh->isShrink;
-						 equivalentObjectId = oh->equivalentObjectId;
-
-					} else {
-						in->variantType = tags.extraObjectType;
-						parent =
-						    yaffs_FindOrCreateObjectByNumber
-							(dev, tags.extraParentObjectId,
-							 YAFFS_OBJECT_TYPE_DIRECTORY);
-						 fileSize = tags.extraFileLength;
-						 isShrink = tags.extraIsShrinkHeader;
-						 equivalentObjectId = tags.extraEquivalentObjectId;
-						in->lazyLoaded = 1;
-
-					}
-					in->dirty = 0;
-
-					if (!parent)
-						alloc_failed = 1;
-
-					/* directory stuff...
-					 * hook up to parent
-					 */
-
-					if (parent && parent->variantType ==
-					    YAFFS_OBJECT_TYPE_UNKNOWN) {
-						/* Set up as a directory */
-						parent->variantType =
-							YAFFS_OBJECT_TYPE_DIRECTORY;
-						YINIT_LIST_HEAD(&parent->variant.
-							directoryVariant.
-							children);
-					} else if (!parent || parent->variantType !=
-						   YAFFS_OBJECT_TYPE_DIRECTORY) {
-						/* Hoosterman, another problem....
-						 * We're trying to use a non-directory as a directory
-						 */
-
-						T(YAFFS_TRACE_ERROR,
-						  (TSTR
-						   ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
-						    TENDSTR)));
-						parent = dev->lostNFoundDir;
-					}
-
-					yaffs_AddObjectToDirectory(parent, in);
-
-					itsUnlinked = (parent == dev->deletedDir) ||
-						      (parent == dev->unlinkedDir);
-
-					if (isShrink) {
-						/* Mark the block as having a shrinkHeader */
-						bi->hasShrinkHeader = 1;
-					}
-
-					/* Note re hardlinks.
-					 * Since we might scan a hardlink before its equivalent object is scanned
-					 * we put them all in a list.
-					 * After scanning is complete, we should have all the objects, so we run
-					 * through this list and fix up all the chains.
-					 */
-
-					switch (in->variantType) {
-					case YAFFS_OBJECT_TYPE_UNKNOWN:
-						/* Todo got a problem */
-						break;
-					case YAFFS_OBJECT_TYPE_FILE:
-
-						if (in->variant.fileVariant.
-						    scannedFileSize < fileSize) {
-							/* This covers the case where the file size is greater
-							 * than where the data is
-							 * This will happen if the file is resized to be larger
-							 * than its current data extents.
-							 */
-							in->variant.fileVariant.fileSize = fileSize;
-							in->variant.fileVariant.scannedFileSize =
-							    in->variant.fileVariant.fileSize;
-						}
-
-						if (isShrink &&
-						    in->variant.fileVariant.shrinkSize > fileSize) {
-							in->variant.fileVariant.shrinkSize = fileSize;
-						}
-
-						break;
-					case YAFFS_OBJECT_TYPE_HARDLINK:
-						if (!itsUnlinked) {
-							in->variant.hardLinkVariant.equivalentObjectId =
-								equivalentObjectId;
-							in->hardLinks.next =
-								(struct ylist_head *) hardList;
-							hardList = in;
-						}
-						break;
-					case YAFFS_OBJECT_TYPE_DIRECTORY:
-						/* Do nothing */
-						break;
-					case YAFFS_OBJECT_TYPE_SPECIAL:
-						/* Do nothing */
-						break;
-					case YAFFS_OBJECT_TYPE_SYMLINK:
-						if (oh) {
-							in->variant.symLinkVariant.alias =
-								yaffs_CloneString(oh->alias);
-							if (!in->variant.symLinkVariant.alias)
-								alloc_failed = 1;
-						}
-						break;
-					}
-
-				}
-
-			}
-
-		} /* End of scanning for each chunk */
-
-		if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
-			/* If we got this far while scanning, then the block is fully allocated. */
-			state = YAFFS_BLOCK_STATE_FULL;
-		}
-
-		bi->blockState = state;
-
-		/* Now let's see if it was dirty */
-		if (bi->pagesInUse == 0 &&
-		    !bi->hasShrinkHeader &&
-		    bi->blockState == YAFFS_BLOCK_STATE_FULL) {
-			yaffs_BlockBecameDirty(dev, blk);
-		}
-
+		yaffs_release_temp_buffer(dev, chunkData, __LINE__);
 	}
-
-	if (altBlockIndex)
-		YFREE_ALT(blockIndex);
-	else
-		YFREE(blockIndex);
-
-	/* Ok, we've done all the scanning.
-	 * Fix up the hard link chains.
-	 * We should now have scanned all the objects, now it's time to add these
-	 * hardlinks.
-	 */
-	yaffs_HardlinkFixup(dev, hardList);
-
-
-	yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
-
-	if (alloc_failed)
-		return YAFFS_FAIL;
-
-	T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR)));
-
-	return YAFFS_OK;
 }
 
 /*------------------------------  Directory Functions ----------------------------- */
 
-static void yaffs_VerifyObjectInDirectory(yaffs_Object *obj)
+/*
+ *yaffs_update_parent() handles fixing a directories mtime and ctime when a new
+ * link (ie. name) is created or deleted in the directory.
+ *
+ * ie.
+ *   create dir/a : update dir's mtime/ctime
+ *   rm dir/a:   update dir's mtime/ctime
+ *   modify dir/a: don't update dir's mtimme/ctime
+ *
+ * This can be handled immediately or defered. Defering helps reduce the number
+ * of updates when many files in a directory are changed within a brief period.
+ *
+ * If the directory updating is defered then yaffs_update_dirty_dirs must be
+ * called periodically.
+ */
+ 
+static void yaffs_update_parent(yaffs_obj_t *obj)
 {
-	struct ylist_head *lh;
-	yaffs_Object *listObj;
-
-	int count = 0;
-
-	if (!obj) {
-		T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR)));
-		YBUG();
+	yaffs_dev_t *dev;
+	if(!obj)
 		return;
-	}
-
-	if (yaffs_SkipVerification(obj->myDev))
-		return;
-
-	if (!obj->parent) {
-		T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR)));
-		YBUG();
-		return;
-	}
-
-	if (obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
-		T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR)));
-		YBUG();
-	}
-
-	/* Iterate through the objects in each hash entry */
+#ifndef CONFIG_YAFFS_WINCE
 
-	ylist_for_each(lh, &obj->parent->variant.directoryVariant.children) {
-		if (lh) {
-			listObj = ylist_entry(lh, yaffs_Object, siblings);
-			yaffs_VerifyObject(listObj);
-			if (obj == listObj)
-				count++;
+	dev = obj->my_dev;
+	obj->dirty = 1;
+	obj->yst_mtime = obj->yst_ctime = Y_CURRENT_TIME;
+	if(dev->param.defered_dir_update){
+		struct ylist_head *link = &obj->variant.dir_variant.dirty; 
+	
+		if(ylist_empty(link)){
+			ylist_add(link,&dev->dirty_dirs);
+			T(YAFFS_TRACE_BACKGROUND, (TSTR("Added object %d to dirty directories" TENDSTR),obj->obj_id));
 		}
-	 }
 
-	if (count != 1) {
-		T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count));
-		YBUG();
-	}
+	} else
+		yaffs_update_oh(obj, NULL, 0, 0, 0, NULL);
+#endif
 }
 
-static void yaffs_VerifyDirectory(yaffs_Object *directory)
+void yaffs_update_dirty_dirs(yaffs_dev_t *dev)
 {
-	struct ylist_head *lh;
-	yaffs_Object *listObj;
+	struct ylist_head *link;
+	yaffs_obj_t *obj;
+	yaffs_dir_s *dS;
+	yaffs_obj_variant *oV;
 
-	if (!directory) {
-		YBUG();
-		return;
-	}
+	T(YAFFS_TRACE_BACKGROUND, (TSTR("Update dirty directories" TENDSTR)));
 
-	if (yaffs_SkipFullVerification(directory->myDev))
-		return;
+	while(!ylist_empty(&dev->dirty_dirs)){
+		link = dev->dirty_dirs.next;
+		ylist_del_init(link);
+		
+		dS=ylist_entry(link,yaffs_dir_s,dirty);
+		oV = ylist_entry(dS,yaffs_obj_variant,dir_variant);
+		obj = ylist_entry(oV,yaffs_obj_t,variant);
 
-	if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
-		T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variantType));
-		YBUG();
-	}
-
-	/* Iterate through the objects in each hash entry */
+		T(YAFFS_TRACE_BACKGROUND, (TSTR("Update directory %d" TENDSTR), obj->obj_id));
 
-	ylist_for_each(lh, &directory->variant.directoryVariant.children) {
-		if (lh) {
-			listObj = ylist_entry(lh, yaffs_Object, siblings);
-			if (listObj->parent != directory) {
-				T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR), listObj->parent));
-				YBUG();
-			}
-			yaffs_VerifyObjectInDirectory(listObj);
-		}
+		if(obj->dirty)
+			yaffs_update_oh(obj, NULL, 0, 0, 0, NULL);
 	}
 }
 
-
-static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj)
+static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj)
 {
-	yaffs_Device *dev = obj->myDev;
-	yaffs_Object *parent;
+	yaffs_dev_t *dev = obj->my_dev;
+	yaffs_obj_t *parent;
 
-	yaffs_VerifyObjectInDirectory(obj);
+	yaffs_verify_obj_in_dir(obj);
 	parent = obj->parent;
 
-	yaffs_VerifyDirectory(parent);
+	yaffs_verify_dir(parent);
 
-	if (dev && dev->removeObjectCallback)
-		dev->removeObjectCallback(obj);
+	if (dev && dev->param.remove_obj_fn)
+		dev->param.remove_obj_fn(obj);
 
 
 	ylist_del_init(&obj->siblings);
 	obj->parent = NULL;
-
-	yaffs_VerifyDirectory(parent);
+	
+	yaffs_verify_dir(parent);
 }
 
-
-static void yaffs_AddObjectToDirectory(yaffs_Object *directory,
-					yaffs_Object *obj)
+void yaffs_add_obj_to_dir(yaffs_obj_t *directory,
+					yaffs_obj_t *obj)
 {
 	if (!directory) {
 		T(YAFFS_TRACE_ALWAYS,
@@ -6699,7 +4495,7 @@ static void yaffs_AddObjectToDirectory(yaffs_Object *directory,
 		YBUG();
 		return;
 	}
-	if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+	if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
 		T(YAFFS_TRACE_ALWAYS,
 		  (TSTR
 		   ("tragedy: Trying to add an object to a non-directory"
@@ -6713,27 +4509,27 @@ static void yaffs_AddObjectToDirectory(yaffs_Object *directory,
 	}
 
 
-	yaffs_VerifyDirectory(directory);
+	yaffs_verify_dir(directory);
 
-	yaffs_RemoveObjectFromDirectory(obj);
+	yaffs_remove_obj_from_dir(obj);
 
 
 	/* Now add it */
-	ylist_add(&obj->siblings, &directory->variant.directoryVariant.children);
+	ylist_add(&obj->siblings, &directory->variant.dir_variant.children);
 	obj->parent = directory;
 
-	if (directory == obj->myDev->unlinkedDir
-			|| directory == obj->myDev->deletedDir) {
+	if (directory == obj->my_dev->unlinked_dir
+			|| directory == obj->my_dev->del_dir) {
 		obj->unlinked = 1;
-		obj->myDev->nUnlinkedFiles++;
-		obj->renameAllowed = 0;
+		obj->my_dev->n_unlinked_files++;
+		obj->rename_allowed = 0;
 	}
 
-	yaffs_VerifyDirectory(directory);
-	yaffs_VerifyObjectInDirectory(obj);
+	yaffs_verify_dir(directory);
+	yaffs_verify_obj_in_dir(obj);
 }
 
-yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory,
+yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *directory,
 				     const YCHAR *name)
 {
 	int sum;
@@ -6741,7 +4537,7 @@ yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory,
 	struct ylist_head *i;
 	YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1];
 
-	yaffs_Object *l;
+	yaffs_obj_t *l;
 
 	if (!name)
 		return NULL;
@@ -6749,39 +4545,39 @@ yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory,
 	if (!directory) {
 		T(YAFFS_TRACE_ALWAYS,
 		  (TSTR
-		   ("tragedy: yaffs_FindObjectByName: null pointer directory"
+		   ("tragedy: yaffs_find_by_name: null pointer directory"
 		    TENDSTR)));
 		YBUG();
 		return NULL;
 	}
-	if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+	if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
 		T(YAFFS_TRACE_ALWAYS,
 		  (TSTR
-		   ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR)));
+		   ("tragedy: yaffs_find_by_name: non-directory" TENDSTR)));
 		YBUG();
 	}
 
-	sum = yaffs_CalcNameSum(name);
+	sum = yaffs_calc_name_sum(name);
 
-	ylist_for_each(i, &directory->variant.directoryVariant.children) {
+	ylist_for_each(i, &directory->variant.dir_variant.children) {
 		if (i) {
-			l = ylist_entry(i, yaffs_Object, siblings);
+			l = ylist_entry(i, yaffs_obj_t, siblings);
 
 			if (l->parent != directory)
 				YBUG();
 
-			yaffs_CheckObjectDetailsLoaded(l);
+			yaffs_check_obj_details_loaded(l);
 
 			/* Special case for lost-n-found */
-			if (l->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
+			if (l->obj_id == YAFFS_OBJECTID_LOSTNFOUND) {
 				if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0)
 					return l;
-			} else if (yaffs_SumCompare(l->sum, sum) || l->hdrChunk <= 0) {
+			} else if (yaffs_sum_cmp(l->sum, sum) || l->hdr_chunk <= 0) {
 				/* LostnFound chunk called Objxxx
 				 * Do a real check
 				 */
-				yaffs_GetObjectName(l, buffer,
-						    YAFFS_MAX_NAME_LENGTH);
+				yaffs_get_obj_name(l, buffer,
+						    YAFFS_MAX_NAME_LENGTH + 1);
 				if (yaffs_strncmp(name, buffer, YAFFS_MAX_NAME_LENGTH) == 0)
 					return l;
 			}
@@ -6793,31 +4589,31 @@ yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory,
 
 
 #if 0
-int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir,
-					int (*fn) (yaffs_Object *))
+int yaffs_ApplyToDirectoryChildren(yaffs_obj_t *the_dir,
+					int (*fn) (yaffs_obj_t *))
 {
 	struct ylist_head *i;
-	yaffs_Object *l;
+	yaffs_obj_t *l;
 
-	if (!theDir) {
+	if (!the_dir) {
 		T(YAFFS_TRACE_ALWAYS,
 		  (TSTR
-		   ("tragedy: yaffs_FindObjectByName: null pointer directory"
+		   ("tragedy: yaffs_find_by_name: null pointer directory"
 		    TENDSTR)));
 		YBUG();
 		return YAFFS_FAIL;
 	}
-	if (theDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+	if (the_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
 		T(YAFFS_TRACE_ALWAYS,
 		  (TSTR
-		   ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR)));
+		   ("tragedy: yaffs_find_by_name: non-directory" TENDSTR)));
 		YBUG();
 		return YAFFS_FAIL;
 	}
 
-	ylist_for_each(i, &theDir->variant.directoryVariant.children) {
+	ylist_for_each(i, &the_dir->variant.dir_variant.children) {
 		if (i) {
-			l = ylist_entry(i, yaffs_Object, siblings);
+			l = ylist_entry(i, yaffs_obj_t, siblings);
 			if (l && !fn(l))
 				return YAFFS_FAIL;
 		}
@@ -6832,82 +4628,175 @@ int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir,
  * actual object.
  */
 
-yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj)
+yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj)
 {
-	if (obj && obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
+	if (obj && obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) {
 		/* We want the object id of the equivalent object, not this one */
-		obj = obj->variant.hardLinkVariant.equivalentObject;
-		yaffs_CheckObjectDetailsLoaded(obj);
+		obj = obj->variant.hardlink_variant.equiv_obj;
+		yaffs_check_obj_details_loaded(obj);
 	}
 	return obj;
 }
 
-int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize)
-{
-	memset(name, 0, buffSize * sizeof(YCHAR));
-
-	yaffs_CheckObjectDetailsLoaded(obj);
+/*
+ *  A note or two on object names.
+ *  * If the object name is missing, we then make one up in the form objnnn
+ *
+ *  * ASCII names are stored in the object header's name field from byte zero
+ *  * Unicode names are historically stored starting from byte zero.
+ *
+ * Then there are automatic Unicode names...
+ * The purpose of these is to save names in a way that can be read as
+ * ASCII or Unicode names as appropriate, thus allowing a Unicode and ASCII
+ * system to share files.
+ *
+ * These automatic unicode are stored slightly differently...
+ *  - If the name can fit in the ASCII character space then they are saved as 
+ *    ascii names as per above.
+ *  - If the name needs Unicode then the name is saved in Unicode
+ *    starting at oh->name[1].
 
-	if (obj->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
-		yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffSize - 1);
-	} else if (obj->hdrChunk <= 0) {
+ */
+static void yaffs_fix_null_name(yaffs_obj_t * obj,YCHAR * name, int buffer_size)
+{
+	/* Create an object name if we could not find one. */
+	if(yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH) == 0){
 		YCHAR locName[20];
 		YCHAR numString[20];
 		YCHAR *x = &numString[19];
-		unsigned v = obj->objectId;
+		unsigned v = obj->obj_id;
 		numString[19] = 0;
-		while (v > 0) {
+		while(v>0){
 			x--;
 			*x = '0' + (v % 10);
 			v /= 10;
 		}
 		/* make up a name */
 		yaffs_strcpy(locName, YAFFS_LOSTNFOUND_PREFIX);
-		yaffs_strcat(locName, x);
-		yaffs_strncpy(name, locName, buffSize - 1);
+		yaffs_strcat(locName,x);
+		yaffs_strncpy(name, locName, buffer_size - 1);
+	}
+}
+
+static void yaffs_load_name_from_oh(yaffs_dev_t *dev,YCHAR *name, const YCHAR *ohName, int bufferSize)
+{
+#ifdef CONFIG_YAFFS_AUTO_UNICODE
+	if(dev->param.auto_unicode){
+		if(*ohName){
+			/* It is an ASCII name, so do an ASCII to unicode conversion */
+			const char *asciiOhName = (const char *)ohName;
+			int n = bufferSize - 1;
+			while(n > 0 && *asciiOhName){
+				*name = *asciiOhName;
+				name++;
+				asciiOhName++;
+				n--;
+			}
+		} else 
+			yaffs_strncpy(name,ohName+1, bufferSize -1);
+	} else
+#endif
+		yaffs_strncpy(name, ohName, bufferSize - 1);
+}
+
+
+static void yaffs_load_oh_from_name(yaffs_dev_t *dev, YCHAR *ohName, const YCHAR *name)
+{
+#ifdef CONFIG_YAFFS_AUTO_UNICODE
+
+	int isAscii;
+	YCHAR *w;
+
+	if(dev->param.auto_unicode){
 
+		isAscii = 1;
+		w = name;
+	
+		/* Figure out if the name will fit in ascii character set */
+		while(isAscii && *w){
+			if((*w) & 0xff00)
+				isAscii = 0;
+			w++;
+		}
+
+		if(isAscii){
+			/* It is an ASCII name, so do a unicode to ascii conversion */
+			char *asciiOhName = (char *)ohName;
+			int n = YAFFS_MAX_NAME_LENGTH  - 1;
+			while(n > 0 && *name){
+				*asciiOhName= *name;
+				name++;
+				asciiOhName++;
+				n--;
+			}
+		} else{
+			/* It is a unicode name, so save starting at the second YCHAR */
+			*ohName = 0;
+			yaffs_strncpy(ohName+1,name, YAFFS_MAX_NAME_LENGTH -2);
+		}
 	}
+	else 
+#endif
+		yaffs_strncpy(ohName,name, YAFFS_MAX_NAME_LENGTH - 1);
+
+}
+
+int yaffs_get_obj_name(yaffs_obj_t * obj, YCHAR * name, int buffer_size)
+{
+	memset(name, 0, buffer_size * sizeof(YCHAR));
+	
+	yaffs_check_obj_details_loaded(obj);
+
+	if (obj->obj_id == YAFFS_OBJECTID_LOSTNFOUND) {
+		yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffer_size - 1);
+	} 
 #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
-	else if (obj->shortName[0])
-		yaffs_strcpy(name, obj->shortName);
+	else if (obj->short_name[0]) {
+		yaffs_strcpy(name, obj->short_name);
+	}
 #endif
-	else {
+	else if(obj->hdr_chunk > 0) {
 		int result;
-		__u8 *buffer = yaffs_GetTempBuffer(obj->myDev, __LINE__);
+		__u8 *buffer = yaffs_get_temp_buffer(obj->my_dev, __LINE__);
 
-		yaffs_ObjectHeader *oh = (yaffs_ObjectHeader *) buffer;
+		yaffs_obj_header *oh = (yaffs_obj_header *) buffer;
 
-		memset(buffer, 0, obj->myDev->nDataBytesPerChunk);
+		memset(buffer, 0, obj->my_dev->data_bytes_per_chunk);
 
-		if (obj->hdrChunk > 0) {
-			result = yaffs_ReadChunkWithTagsFromNAND(obj->myDev,
-							obj->hdrChunk, buffer,
+		if (obj->hdr_chunk > 0) {
+			result = yaffs_rd_chunk_tags_nand(obj->my_dev,
+							obj->hdr_chunk, buffer,
 							NULL);
 		}
-		yaffs_strncpy(name, oh->name, buffSize - 1);
+		yaffs_load_name_from_oh(obj->my_dev,name,oh->name,buffer_size);
 
-		yaffs_ReleaseTempBuffer(obj->myDev, buffer, __LINE__);
+		yaffs_release_temp_buffer(obj->my_dev, buffer, __LINE__);
 	}
 
-	return yaffs_strlen(name);
+	yaffs_fix_null_name(obj,name,buffer_size);
+
+	return yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH);
 }
 
-int yaffs_GetObjectFileLength(yaffs_Object *obj)
+
+int yaffs_get_obj_length(yaffs_obj_t *obj)
 {
 	/* Dereference any hard linking */
-	obj = yaffs_GetEquivalentObject(obj);
+	obj = yaffs_get_equivalent_obj(obj);
 
-	if (obj->variantType == YAFFS_OBJECT_TYPE_FILE)
-		return obj->variant.fileVariant.fileSize;
-	if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
-		return yaffs_strlen(obj->variant.symLinkVariant.alias);
-	else {
+	if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE)
+		return obj->variant.file_variant.file_size;
+	if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK){
+		if(!obj->variant.symlink_variant.alias)
+			return 0;
+		return yaffs_strnlen(obj->variant.symlink_variant.alias,YAFFS_MAX_ALIAS_LENGTH);
+	} else {
 		/* Only a directory should drop through to here */
-		return obj->myDev->nDataBytesPerChunk;
+		return obj->my_dev->data_bytes_per_chunk;
 	}
 }
 
-int yaffs_GetObjectLinkCount(yaffs_Object *obj)
+int yaffs_get_obj_link_count(yaffs_obj_t *obj)
 {
 	int count = 0;
 	struct ylist_head *i;
@@ -6915,24 +4804,24 @@ int yaffs_GetObjectLinkCount(yaffs_Object *obj)
 	if (!obj->unlinked)
 		count++;		/* the object itself */
 
-	ylist_for_each(i, &obj->hardLinks)
+	ylist_for_each(i, &obj->hard_links)
 		count++;		/* add the hard links; */
 
 	return count;
 }
 
-int yaffs_GetObjectInode(yaffs_Object *obj)
+int yaffs_get_obj_inode(yaffs_obj_t *obj)
 {
-	obj = yaffs_GetEquivalentObject(obj);
+	obj = yaffs_get_equivalent_obj(obj);
 
-	return obj->objectId;
+	return obj->obj_id;
 }
 
-unsigned yaffs_GetObjectType(yaffs_Object *obj)
+unsigned yaffs_get_obj_type(yaffs_obj_t *obj)
 {
-	obj = yaffs_GetEquivalentObject(obj);
+	obj = yaffs_get_equivalent_obj(obj);
 
-	switch (obj->variantType) {
+	switch (obj->variant_type) {
 	case YAFFS_OBJECT_TYPE_FILE:
 		return DT_REG;
 		break;
@@ -6960,18 +4849,18 @@ unsigned yaffs_GetObjectType(yaffs_Object *obj)
 	}
 }
 
-YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj)
+YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj)
 {
-	obj = yaffs_GetEquivalentObject(obj);
-	if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
-		return yaffs_CloneString(obj->variant.symLinkVariant.alias);
+	obj = yaffs_get_equivalent_obj(obj);
+	if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK)
+		return yaffs_clone_str(obj->variant.symlink_variant.alias);
 	else
-		return yaffs_CloneString(_Y(""));
+		return yaffs_clone_str(_Y(""));
 }
 
 #ifndef CONFIG_YAFFS_WINCE
 
-int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr)
+int yaffs_set_attribs(yaffs_obj_t *obj, struct iattr *attr)
 {
 	unsigned int valid = attr->ia_valid;
 
@@ -6990,14 +4879,14 @@ int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr)
 		obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime);
 
 	if (valid & ATTR_SIZE)
-		yaffs_ResizeFile(obj, attr->ia_size);
+		yaffs_resize_file(obj, attr->ia_size);
 
-	yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0);
+	yaffs_update_oh(obj, NULL, 1, 0, 0, NULL);
 
 	return YAFFS_OK;
 
 }
-int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr)
+int yaffs_get_attribs(yaffs_obj_t *obj, struct iattr *attr)
 {
 	unsigned int valid = 0;
 
@@ -7015,7 +4904,7 @@ int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr)
 	Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime;
 	valid |= ATTR_MTIME;
 
-	attr->ia_size = yaffs_GetFileSize(obj);
+	attr->ia_size = yaffs_get_file_size(obj);
 	valid |= ATTR_SIZE;
 
 	attr->ia_valid = valid;
@@ -7025,20 +4914,137 @@ int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr)
 
 #endif
 
+
+static int yaffs_do_xattrib_mod(yaffs_obj_t *obj, int set, const YCHAR *name, const void *value, int size, int flags)
+{
+	yaffs_xattr_mod xmod;
+
+	int result;
+
+	xmod.set = set;
+	xmod.name = name;
+	xmod.data = value;
+	xmod.size =  size;
+	xmod.flags = flags;
+	xmod.result = -ENOSPC;
+
+	result = yaffs_update_oh(obj, NULL, 0, 0, 0, &xmod);
+
+	if(result > 0)
+		return xmod.result;
+	else
+		return -ENOSPC;
+}
+
+static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod)
+{
+	int retval = 0;
+	int x_offs = sizeof(yaffs_obj_header);
+	yaffs_dev_t *dev = obj->my_dev;
+	int x_size = dev->data_bytes_per_chunk - sizeof(yaffs_obj_header);
+
+	char * x_buffer = buffer + x_offs;
+
+	if(xmod->set)
+		retval = nval_set(x_buffer, x_size, xmod->name, xmod->data, xmod->size, xmod->flags);
+	else
+		retval = nval_del(x_buffer, x_size, xmod->name);
+
+	obj->has_xattr = nval_hasvalues(x_buffer, x_size);
+	obj->xattr_known = 1;
+
+	xmod->result = retval;
+
+	return retval;
+}
+
+static int yaffs_do_xattrib_fetch(yaffs_obj_t *obj, const YCHAR *name, void *value, int size)
+{
+	char *buffer = NULL;
+	int result;
+	yaffs_ext_tags tags;
+	yaffs_dev_t *dev = obj->my_dev;
+	int x_offs = sizeof(yaffs_obj_header);
+	int x_size = dev->data_bytes_per_chunk - sizeof(yaffs_obj_header);
+
+	char * x_buffer;
+
+	int retval = 0;
+
+	if(obj->hdr_chunk < 1)
+		return -ENODATA;
+
+	/* If we know that the object has no xattribs then don't do all the
+	 * reading and parsing.
+	 */
+	if(obj->xattr_known && !obj->has_xattr){
+		if(name)
+			return -ENODATA;
+		else
+			return 0;
+	}
+
+	buffer = (char *) yaffs_get_temp_buffer(dev, __LINE__);
+	if(!buffer)
+		return -ENOMEM;
+
+	result = yaffs_rd_chunk_tags_nand(dev,obj->hdr_chunk, (__u8 *)buffer, &tags);
+
+	if(result != YAFFS_OK)
+		retval = -ENOENT;
+	else{
+		x_buffer =  buffer + x_offs;
+
+		if (!obj->xattr_known){
+			obj->has_xattr = nval_hasvalues(x_buffer, x_size);
+			obj->xattr_known = 1;
+		}
+
+		if(name)
+			retval = nval_get(x_buffer, x_size, name, value, size);
+		else
+			retval = nval_list(x_buffer, x_size, value,size);
+	}
+	yaffs_release_temp_buffer(dev,(__u8 *)buffer,__LINE__);
+	return retval;
+}
+
+int yaffs_set_xattrib(yaffs_obj_t *obj, const YCHAR *name, const void * value, int size, int flags)
+{
+	return yaffs_do_xattrib_mod(obj, 1, name, value, size, flags);
+}
+
+int yaffs_remove_xattrib(yaffs_obj_t *obj, const YCHAR *name)
+{
+	return yaffs_do_xattrib_mod(obj, 0, name, NULL, 0, 0);
+}
+
+int yaffs_get_xattrib(yaffs_obj_t *obj, const YCHAR *name, void *value, int size)
+{
+	return yaffs_do_xattrib_fetch(obj, name, value, size);
+}
+
+int yaffs_list_xattrib(yaffs_obj_t *obj, char *buffer, int size)
+{
+	return yaffs_do_xattrib_fetch(obj, NULL, buffer,size);
+}
+
+
+
 #if 0
-int yaffs_DumpObject(yaffs_Object *obj)
+int yaffs_dump_obj(yaffs_obj_t *obj)
 {
 	YCHAR name[257];
 
-	yaffs_GetObjectName(obj, name, 256);
+	yaffs_get_obj_name(obj, name, YAFFS_MAX_NAME_LENGTH + 1);
 
 	T(YAFFS_TRACE_ALWAYS,
 	  (TSTR
 	   ("Object %d, inode %d \"%s\"\n dirty %d valid %d serial %d sum %d"
 	    " chunk %d type %d size %d\n"
-	    TENDSTR), obj->objectId, yaffs_GetObjectInode(obj), name,
-	   obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdrChunk,
-	   yaffs_GetObjectType(obj), yaffs_GetObjectFileLength(obj)));
+	    TENDSTR), obj->obj_id, yaffs_get_obj_inode(obj), name,
+	   obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdr_chunk,
+	   yaffs_get_obj_type(obj), yaffs_get_obj_length(obj)));
 
 	return YAFFS_OK;
 }
@@ -7046,72 +5052,74 @@ int yaffs_DumpObject(yaffs_Object *obj)
 
 /*---------------------------- Initialisation code -------------------------------------- */
 
-static int yaffs_CheckDevFunctions(const yaffs_Device *dev)
+static int yaffs_cehck_dev_fns(const yaffs_dev_t *dev)
 {
 
 	/* Common functions, gotta have */
-	if (!dev->eraseBlockInNAND || !dev->initialiseNAND)
+	if (!dev->param.erase_fn || !dev->param.initialise_flash_fn)
 		return 0;
 
 #ifdef CONFIG_YAFFS_YAFFS2
 
 	/* Can use the "with tags" style interface for yaffs1 or yaffs2 */
-	if (dev->writeChunkWithTagsToNAND &&
-	    dev->readChunkWithTagsFromNAND &&
-	    !dev->writeChunkToNAND &&
-	    !dev->readChunkFromNAND &&
-	    dev->markNANDBlockBad && dev->queryNANDBlock)
+	if (dev->param.write_chunk_tags_fn &&
+	    dev->param.read_chunk_tags_fn &&
+	    !dev->param.write_chunk_fn &&
+	    !dev->param.read_chunk_fn &&
+	    dev->param.bad_block_fn &&
+	    dev->param.query_block_fn)
 		return 1;
 #endif
 
 	/* Can use the "spare" style interface for yaffs1 */
-	if (!dev->isYaffs2 &&
-	    !dev->writeChunkWithTagsToNAND &&
-	    !dev->readChunkWithTagsFromNAND &&
-	    dev->writeChunkToNAND &&
-	    dev->readChunkFromNAND &&
-	    !dev->markNANDBlockBad && !dev->queryNANDBlock)
+	if (!dev->param.is_yaffs2 &&
+	    !dev->param.write_chunk_tags_fn &&
+	    !dev->param.read_chunk_tags_fn &&
+	    dev->param.write_chunk_fn &&
+	    dev->param.read_chunk_fn &&
+	    !dev->param.bad_block_fn &&
+	    !dev->param.query_block_fn)
 		return 1;
 
-	return 0;		/* bad */
+	return 0;	/* bad */
 }
 
 
-static int yaffs_CreateInitialDirectories(yaffs_Device *dev)
+static int yaffs_create_initial_dir(yaffs_dev_t *dev)
 {
 	/* Initialise the unlinked, deleted, root and lost and found directories */
 
-	dev->lostNFoundDir = dev->rootDir =  NULL;
-	dev->unlinkedDir = dev->deletedDir = NULL;
+	dev->lost_n_found = dev->root_dir =  NULL;
+	dev->unlinked_dir = dev->del_dir = NULL;
 
-	dev->unlinkedDir =
-	    yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR);
+	dev->unlinked_dir =
+	    yaffs_create_fake_dir(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR);
 
-	dev->deletedDir =
-	    yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_DELETED, S_IFDIR);
+	dev->del_dir =
+	    yaffs_create_fake_dir(dev, YAFFS_OBJECTID_DELETED, S_IFDIR);
 
-	dev->rootDir =
-	    yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_ROOT,
+	dev->root_dir =
+	    yaffs_create_fake_dir(dev, YAFFS_OBJECTID_ROOT,
 				      YAFFS_ROOT_MODE | S_IFDIR);
-	dev->lostNFoundDir =
-	    yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_LOSTNFOUND,
+	dev->lost_n_found =
+	    yaffs_create_fake_dir(dev, YAFFS_OBJECTID_LOSTNFOUND,
 				      YAFFS_LOSTNFOUND_MODE | S_IFDIR);
 
-	if (dev->lostNFoundDir && dev->rootDir && dev->unlinkedDir && dev->deletedDir) {
-		yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir);
+	if (dev->lost_n_found && dev->root_dir && dev->unlinked_dir && dev->del_dir) {
+		yaffs_add_obj_to_dir(dev->root_dir, dev->lost_n_found);
 		return YAFFS_OK;
 	}
 
 	return YAFFS_FAIL;
 }
 
-int yaffs_GutsInitialise(yaffs_Device *dev)
+int yaffs_guts_initialise(yaffs_dev_t *dev)
 {
 	int init_failed = 0;
 	unsigned x;
 	int bits;
 
-	T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_GutsInitialise()" TENDSTR)));
+	T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_guts_initialise()" TENDSTR)));
 
 	/* Check stuff that must be set */
 
@@ -7120,52 +5128,52 @@ int yaffs_GutsInitialise(yaffs_Device *dev)
 		return YAFFS_FAIL;
 	}
 
-	dev->internalStartBlock = dev->startBlock;
-	dev->internalEndBlock = dev->endBlock;
-	dev->blockOffset = 0;
-	dev->chunkOffset = 0;
-	dev->nFreeChunks = 0;
+	dev->internal_start_block = dev->param.start_block;
+	dev->internal_end_block = dev->param.end_block;
+	dev->block_offset = 0;
+	dev->chunk_offset = 0;
+	dev->n_free_chunks = 0;
 
-	dev->gcBlock = -1;
+	dev->gc_block = 0;
 
-	if (dev->startBlock == 0) {
-		dev->internalStartBlock = dev->startBlock + 1;
-		dev->internalEndBlock = dev->endBlock + 1;
-		dev->blockOffset = 1;
-		dev->chunkOffset = dev->nChunksPerBlock;
+	if (dev->param.start_block == 0) {
+		dev->internal_start_block = dev->param.start_block + 1;
+		dev->internal_end_block = dev->param.end_block + 1;
+		dev->block_offset = 1;
+		dev->chunk_offset = dev->param.chunks_per_block;
 	}
 
 	/* Check geometry parameters. */
 
-	if ((!dev->inbandTags && dev->isYaffs2 && dev->totalBytesPerChunk < 1024) ||
-	    (!dev->isYaffs2 && dev->totalBytesPerChunk < 512) ||
-	    (dev->inbandTags && !dev->isYaffs2) ||
-	     dev->nChunksPerBlock < 2 ||
-	     dev->nReservedBlocks < 2 ||
-	     dev->internalStartBlock <= 0 ||
-	     dev->internalEndBlock <= 0 ||
-	     dev->internalEndBlock <= (dev->internalStartBlock + dev->nReservedBlocks + 2)) {	/* otherwise it is too small */
+	if ((!dev->param.inband_tags && dev->param.is_yaffs2 && dev->param.total_bytes_per_chunk < 1024) ||
+	    (!dev->param.is_yaffs2 && dev->param.total_bytes_per_chunk < 512) ||
+	    (dev->param.inband_tags && !dev->param.is_yaffs2) ||
+	     dev->param.chunks_per_block < 2 ||
+	     dev->param.n_reserved_blocks < 2 ||
+	     dev->internal_start_block <= 0 ||
+	     dev->internal_end_block <= 0 ||
+	     dev->internal_end_block <= (dev->internal_start_block + dev->param.n_reserved_blocks + 2)) {	/* otherwise it is too small */
 		T(YAFFS_TRACE_ALWAYS,
 		  (TSTR
-		   ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inbandTags %d "
-		    TENDSTR), dev->totalBytesPerChunk, dev->isYaffs2 ? "2" : "", dev->inbandTags));
+		   ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inband_tags %d "
+		    TENDSTR), dev->param.total_bytes_per_chunk, dev->param.is_yaffs2 ? "2" : "", dev->param.inband_tags));
 		return YAFFS_FAIL;
 	}
 
-	if (yaffs_InitialiseNAND(dev) != YAFFS_OK) {
+	if (yaffs_init_nand(dev) != YAFFS_OK) {
 		T(YAFFS_TRACE_ALWAYS,
 		  (TSTR("yaffs: InitialiseNAND failed" TENDSTR)));
 		return YAFFS_FAIL;
 	}
 
 	/* Sort out space for inband tags, if required */
-	if (dev->inbandTags)
-		dev->nDataBytesPerChunk = dev->totalBytesPerChunk - sizeof(yaffs_PackedTags2TagsPart);
+	if (dev->param.inband_tags)
+		dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk - sizeof(yaffs_PackedTags2TagsPart);
 	else
-		dev->nDataBytesPerChunk = dev->totalBytesPerChunk;
+		dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk;
 
 	/* Got the right mix of functions? */
-	if (!yaffs_CheckDevFunctions(dev)) {
+	if (!yaffs_cehck_dev_fns(dev)) {
 		/* Function missing */
 		T(YAFFS_TRACE_ALWAYS,
 		  (TSTR
@@ -7175,13 +5183,13 @@ int yaffs_GutsInitialise(yaffs_Device *dev)
 	}
 
 	/* This is really a compilation check. */
-	if (!yaffs_CheckStructures()) {
+	if (!yaffs_check_structures()) {
 		T(YAFFS_TRACE_ALWAYS,
-		  (TSTR("yaffs_CheckStructures failed\n" TENDSTR)));
+		  (TSTR("yaffs_check_structures failed\n" TENDSTR)));
 		return YAFFS_FAIL;
 	}
 
-	if (dev->isMounted) {
+	if (dev->is_mounted) {
 		T(YAFFS_TRACE_ALWAYS,
 		  (TSTR("yaffs: device already mounted\n" TENDSTR)));
 		return YAFFS_FAIL;
@@ -7189,59 +5197,62 @@ int yaffs_GutsInitialise(yaffs_Device *dev)
 
 	/* Finished with most checks. One or two more checks happen later on too. */
 
-	dev->isMounted = 1;
+	dev->is_mounted = 1;
 
 	/* OK now calculate a few things for the device */
 
 	/*
 	 *  Calculate all the chunk size manipulation numbers:
 	 */
-	x = dev->nDataBytesPerChunk;
-	/* We always use dev->chunkShift and dev->chunkDiv */
-	dev->chunkShift = Shifts(x);
-	x >>= dev->chunkShift;
-	dev->chunkDiv = x;
-	/* We only use chunk mask if chunkDiv is 1 */
-	dev->chunkMask = (1<<dev->chunkShift) - 1;
+	x = dev->data_bytes_per_chunk;
+	/* We always use dev->chunk_shift and dev->chunk_div */
+	dev->chunk_shift = Shifts(x);
+	x >>= dev->chunk_shift;
+	dev->chunk_div = x;
+	/* We only use chunk mask if chunk_div is 1 */
+	dev->chunk_mask = (1<<dev->chunk_shift) - 1;
 
 	/*
-	 * Calculate chunkGroupBits.
-	 * We need to find the next power of 2 > than internalEndBlock
+	 * Calculate chunk_grp_bits.
+	 * We need to find the next power of 2 > than internal_end_block
 	 */
 
-	x = dev->nChunksPerBlock * (dev->internalEndBlock + 1);
+	x = dev->param.chunks_per_block * (dev->internal_end_block + 1);
 
 	bits = ShiftsGE(x);
 
 	/* Set up tnode width if wide tnodes are enabled. */
-	if (!dev->wideTnodesDisabled) {
+	if (!dev->param.wide_tnodes_disabled) {
 		/* bits must be even so that we end up with 32-bit words */
 		if (bits & 1)
 			bits++;
 		if (bits < 16)
-			dev->tnodeWidth = 16;
+			dev->tnode_width = 16;
 		else
-			dev->tnodeWidth = bits;
+			dev->tnode_width = bits;
 	} else
-		dev->tnodeWidth = 16;
+		dev->tnode_width = 16;
 
-	dev->tnodeMask = (1<<dev->tnodeWidth)-1;
+	dev->tnode_mask = (1<<dev->tnode_width)-1;
 
 	/* Level0 Tnodes are 16 bits or wider (if wide tnodes are enabled),
 	 * so if the bitwidth of the
 	 * chunk range we're using is greater than 16 we need
-	 * to figure out chunk shift and chunkGroupSize
+	 * to figure out chunk shift and chunk_grp_size
 	 */
 
-	if (bits <= dev->tnodeWidth)
-		dev->chunkGroupBits = 0;
+	if (bits <= dev->tnode_width)
+		dev->chunk_grp_bits = 0;
 	else
-		dev->chunkGroupBits = bits - dev->tnodeWidth;
+		dev->chunk_grp_bits = bits - dev->tnode_width;
 
+	dev->tnode_size = (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8;
+	if(dev->tnode_size < sizeof(yaffs_tnode_t))
+		dev->tnode_size = sizeof(yaffs_tnode_t);
 
-	dev->chunkGroupSize = 1 << dev->chunkGroupBits;
+	dev->chunk_grp_size = 1 << dev->chunk_grp_bits;
 
-	if (dev->nChunksPerBlock < dev->chunkGroupSize) {
+	if (dev->param.chunks_per_block < dev->chunk_grp_size) {
 		/* We have a problem because the soft delete won't work if
 		 * the chunk group size > chunks per block.
 		 * This can be remedied by using larger "virtual blocks".
@@ -7255,85 +5266,89 @@ int yaffs_GutsInitialise(yaffs_Device *dev)
 	/* OK, we've finished verifying the device, lets continue with initialisation */
 
 	/* More device initialisation */
-	dev->garbageCollections = 0;
-	dev->passiveGarbageCollections = 0;
-	dev->currentDirtyChecker = 0;
-	dev->bufferedBlock = -1;
-	dev->doingBufferedBlockRewrite = 0;
-	dev->nDeletedFiles = 0;
-	dev->nBackgroundDeletions = 0;
-	dev->nUnlinkedFiles = 0;
-	dev->eccFixed = 0;
-	dev->eccUnfixed = 0;
-	dev->tagsEccFixed = 0;
-	dev->tagsEccUnfixed = 0;
-	dev->nErasureFailures = 0;
-	dev->nErasedBlocks = 0;
-	dev->isDoingGC = 0;
-	dev->hasPendingPrioritisedGCs = 1; /* Assume the worst for now, will get fixed on first GC */
+	dev->all_gcs = 0;
+	dev->passive_gc_count = 0;
+	dev->oldest_dirty_gc_count = 0;
+	dev->bg_gcs = 0;
+	dev->gc_block_finder = 0;
+	dev->buffered_block = -1;
+	dev->doing_buffered_block_rewrite = 0;
+	dev->n_deleted_files = 0;
+	dev->n_bg_deletions = 0;
+	dev->n_unlinked_files = 0;
+	dev->n_ecc_fixed = 0;
+	dev->n_ecc_unfixed = 0;
+	dev->n_tags_ecc_fixed = 0;
+	dev->n_tags_ecc_unfixed = 0;
+	dev->n_erase_failures = 0;
+	dev->n_erased_blocks = 0;
+	dev->gc_disable= 0;
+	dev->has_pending_prioritised_gc = 1; /* Assume the worst for now, will get fixed on first GC */
+	YINIT_LIST_HEAD(&dev->dirty_dirs);
+	dev->oldest_dirty_seq = 0;
+	dev->oldest_dirty_block = 0;
 
 	/* Initialise temporary buffers and caches. */
-	if (!yaffs_InitialiseTempBuffers(dev))
+	if (!yaffs_init_tmp_buffers(dev))
 		init_failed = 1;
 
-	dev->srCache = NULL;
-	dev->gcCleanupList = NULL;
+	dev->cache = NULL;
+	dev->gc_cleanup_list = NULL;
 
 
 	if (!init_failed &&
-	    dev->nShortOpCaches > 0) {
+	    dev->param.n_caches > 0) {
 		int i;
 		void *buf;
-		int srCacheBytes = dev->nShortOpCaches * sizeof(yaffs_ChunkCache);
+		int cacheBytes = dev->param.n_caches * sizeof(yaffs_cache_t);
 
-		if (dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES)
-			dev->nShortOpCaches = YAFFS_MAX_SHORT_OP_CACHES;
+		if (dev->param.n_caches > YAFFS_MAX_SHORT_OP_CACHES)
+			dev->param.n_caches = YAFFS_MAX_SHORT_OP_CACHES;
 
-		dev->srCache =  YMALLOC(srCacheBytes);
+		dev->cache =  YMALLOC(cacheBytes);
 
-		buf = (__u8 *) dev->srCache;
+		buf = (__u8 *) dev->cache;
 
-		if (dev->srCache)
-			memset(dev->srCache, 0, srCacheBytes);
+		if (dev->cache)
+			memset(dev->cache, 0, cacheBytes);
 
-		for (i = 0; i < dev->nShortOpCaches && buf; i++) {
-			dev->srCache[i].object = NULL;
-			dev->srCache[i].lastUse = 0;
-			dev->srCache[i].dirty = 0;
-			dev->srCache[i].data = buf = YMALLOC_DMA(dev->totalBytesPerChunk);
+		for (i = 0; i < dev->param.n_caches && buf; i++) {
+			dev->cache[i].object = NULL;
+			dev->cache[i].last_use = 0;
+			dev->cache[i].dirty = 0;
+			dev->cache[i].data = buf = YMALLOC_DMA(dev->param.total_bytes_per_chunk);
 		}
 		if (!buf)
 			init_failed = 1;
 
-		dev->srLastUse = 0;
+		dev->cache_last_use = 0;
 	}
 
-	dev->cacheHits = 0;
+	dev->cache_hits = 0;
 
 	if (!init_failed) {
-		dev->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32));
-		if (!dev->gcCleanupList)
+		dev->gc_cleanup_list = YMALLOC(dev->param.chunks_per_block * sizeof(__u32));
+		if (!dev->gc_cleanup_list)
 			init_failed = 1;
 	}
 
-	if (dev->isYaffs2)
-		dev->useHeaderFileSize = 1;
+	if (dev->param.is_yaffs2)
+		dev->param.use_header_file_size = 1;
 
-	if (!init_failed && !yaffs_InitialiseBlocks(dev))
+	if (!init_failed && !yaffs_init_blocks(dev))
 		init_failed = 1;
 
-	yaffs_InitialiseTnodes(dev);
-	yaffs_InitialiseObjects(dev);
+	yaffs_init_tnodes_and_objs(dev);
 
-	if (!init_failed && !yaffs_CreateInitialDirectories(dev))
+	if (!init_failed && !yaffs_create_initial_dir(dev))
 		init_failed = 1;
 
 
 	if (!init_failed) {
 		/* Now scan the flash. */
-		if (dev->isYaffs2) {
-			if (yaffs_CheckpointRestore(dev)) {
-				yaffs_CheckObjectDetailsLoaded(dev->rootDir);
+		if (dev->param.is_yaffs2) {
+			if (yaffs2_checkpt_restore(dev)) {
+				yaffs_check_obj_details_loaded(dev->root_dir);
 				T(YAFFS_TRACE_ALWAYS,
 				  (TSTR("yaffs: restored from checkpoint" TENDSTR)));
 			} else {
@@ -7341,128 +5356,129 @@ int yaffs_GutsInitialise(yaffs_Device *dev)
 				/* Clean up the mess caused by an aborted checkpoint load
 				 * and scan backwards.
 				 */
-				yaffs_DeinitialiseBlocks(dev);
-				yaffs_DeinitialiseTnodes(dev);
-				yaffs_DeinitialiseObjects(dev);
+				yaffs_deinit_blocks(dev);
 
+				yaffs_deinit_tnodes_and_objs(dev);
 
-				dev->nErasedBlocks = 0;
-				dev->nFreeChunks = 0;
-				dev->allocationBlock = -1;
-				dev->allocationPage = -1;
-				dev->nDeletedFiles = 0;
-				dev->nUnlinkedFiles = 0;
-				dev->nBackgroundDeletions = 0;
-				dev->oldestDirtySequence = 0;
+				dev->n_erased_blocks = 0;
+				dev->n_free_chunks = 0;
+				dev->alloc_block = -1;
+				dev->alloc_page = -1;
+				dev->n_deleted_files = 0;
+				dev->n_unlinked_files = 0;
+				dev->n_bg_deletions = 0;
 
-				if (!init_failed && !yaffs_InitialiseBlocks(dev))
+				if (!init_failed && !yaffs_init_blocks(dev))
 					init_failed = 1;
 
-				yaffs_InitialiseTnodes(dev);
-				yaffs_InitialiseObjects(dev);
+				yaffs_init_tnodes_and_objs(dev);
 
-				if (!init_failed && !yaffs_CreateInitialDirectories(dev))
+				if (!init_failed && !yaffs_create_initial_dir(dev))
 					init_failed = 1;
 
-				if (!init_failed && !yaffs_ScanBackwards(dev))
+				if (!init_failed && !yaffs2_scan_backwards(dev))
 					init_failed = 1;
 			}
-		} else if (!yaffs_Scan(dev))
+		} else if (!yaffs1_scan(dev))
 				init_failed = 1;
 
-		yaffs_StripDeletedObjects(dev);
+		yaffs_strip_deleted_objs(dev);
+		yaffs_fix_hanging_objs(dev);
+		if(dev->param.empty_lost_n_found)
+			yaffs_empty_l_n_f(dev);
 	}
 
 	if (init_failed) {
 		/* Clean up the mess */
 		T(YAFFS_TRACE_TRACING,
-		  (TSTR("yaffs: yaffs_GutsInitialise() aborted.\n" TENDSTR)));
+		  (TSTR("yaffs: yaffs_guts_initialise() aborted.\n" TENDSTR)));
 
-		yaffs_Deinitialise(dev);
+		yaffs_deinitialise(dev);
 		return YAFFS_FAIL;
 	}
 
 	/* Zero out stats */
-	dev->nPageReads = 0;
-	dev->nPageWrites = 0;
-	dev->nBlockErasures = 0;
-	dev->nGCCopies = 0;
-	dev->nRetriedWrites = 0;
+	dev->n_page_reads = 0;
+	dev->n_page_writes = 0;
+	dev->n_erasures = 0;
+	dev->n_gc_copies = 0;
+	dev->n_retired_writes = 0;
 
-	dev->nRetiredBlocks = 0;
+	dev->n_retired_blocks = 0;
 
-	yaffs_VerifyFreeChunks(dev);
-	yaffs_VerifyBlocks(dev);
+	yaffs_verify_free_chunks(dev);
+	yaffs_verify_blocks(dev);
 
+	/* Clean up any aborted checkpoint data */
+	if(!dev->is_checkpointed && dev->blocks_in_checkpt > 0)
+		yaffs2_checkpt_invalidate(dev);
 
 	T(YAFFS_TRACE_TRACING,
-	  (TSTR("yaffs: yaffs_GutsInitialise() done.\n" TENDSTR)));
+	  (TSTR("yaffs: yaffs_guts_initialise() done.\n" TENDSTR)));
 	return YAFFS_OK;
 
 }
 
-void yaffs_Deinitialise(yaffs_Device *dev)
+void yaffs_deinitialise(yaffs_dev_t *dev)
 {
-	if (dev->isMounted) {
+	if (dev->is_mounted) {
 		int i;
 
-		yaffs_DeinitialiseBlocks(dev);
-		yaffs_DeinitialiseTnodes(dev);
-		yaffs_DeinitialiseObjects(dev);
-		if (dev->nShortOpCaches > 0 &&
-		    dev->srCache) {
+		yaffs_deinit_blocks(dev);
+		yaffs_deinit_tnodes_and_objs(dev);
+		if (dev->param.n_caches > 0 &&
+		    dev->cache) {
 
-			for (i = 0; i < dev->nShortOpCaches; i++) {
-				if (dev->srCache[i].data)
-					YFREE(dev->srCache[i].data);
-				dev->srCache[i].data = NULL;
+			for (i = 0; i < dev->param.n_caches; i++) {
+				if (dev->cache[i].data)
+					YFREE(dev->cache[i].data);
+				dev->cache[i].data = NULL;
 			}
 
-			YFREE(dev->srCache);
-			dev->srCache = NULL;
+			YFREE(dev->cache);
+			dev->cache = NULL;
 		}
 
-		YFREE(dev->gcCleanupList);
+		YFREE(dev->gc_cleanup_list);
 
 		for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++)
-			YFREE(dev->tempBuffer[i].buffer);
+			YFREE(dev->temp_buffer[i].buffer);
 
-		dev->isMounted = 0;
+		dev->is_mounted = 0;
 
-		if (dev->deinitialiseNAND)
-			dev->deinitialiseNAND(dev);
+		if (dev->param.deinitialise_flash_fn)
+			dev->param.deinitialise_flash_fn(dev);
 	}
 }
 
-static int yaffs_CountFreeChunks(yaffs_Device *dev)
+int yaffs_count_free_chunks(yaffs_dev_t *dev)
 {
-	int nFree;
+	int nFree=0;
 	int b;
 
-	yaffs_BlockInfo *blk;
+	yaffs_block_info_t *blk;
 
-	for (nFree = 0, b = dev->internalStartBlock; b <= dev->internalEndBlock;
-			b++) {
-		blk = yaffs_GetBlockInfo(dev, b);
-
-		switch (blk->blockState) {
+	blk = dev->block_info;
+	for (b = dev->internal_start_block; b <= dev->internal_end_block; b++) {
+		switch (blk->block_state) {
 		case YAFFS_BLOCK_STATE_EMPTY:
 		case YAFFS_BLOCK_STATE_ALLOCATING:
 		case YAFFS_BLOCK_STATE_COLLECTING:
 		case YAFFS_BLOCK_STATE_FULL:
 			nFree +=
-			    (dev->nChunksPerBlock - blk->pagesInUse +
-			     blk->softDeletions);
+			    (dev->param.chunks_per_block - blk->pages_in_use +
+			     blk->soft_del_pages);
 			break;
 		default:
 			break;
 		}
+		blk++;
 	}
 
 	return nFree;
 }
 
-int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev)
+int yaffs_get_n_free_chunks(yaffs_dev_t *dev)
 {
 	/* This is what we report to the outside world */
 
@@ -7472,30 +5488,28 @@ int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev)
 	int i;
 
 #if 1
-	nFree = dev->nFreeChunks;
+	nFree = dev->n_free_chunks;
 #else
-	nFree = yaffs_CountFreeChunks(dev);
+	nFree = yaffs_count_free_chunks(dev);
 #endif
 
-	nFree += dev->nDeletedFiles;
+	nFree += dev->n_deleted_files;
 
 	/* Now count the number of dirty chunks in the cache and subtract those */
 
-	for (nDirtyCacheChunks = 0, i = 0; i < dev->nShortOpCaches; i++) {
-		if (dev->srCache[i].dirty)
+	for (nDirtyCacheChunks = 0, i = 0; i < dev->param.n_caches; i++) {
+		if (dev->cache[i].dirty)
 			nDirtyCacheChunks++;
 	}
 
 	nFree -= nDirtyCacheChunks;
 
-	nFree -= ((dev->nReservedBlocks + 1) * dev->nChunksPerBlock);
+	nFree -= ((dev->param.n_reserved_blocks + 1) * dev->param.chunks_per_block);
 
 	/* Now we figure out how much to reserve for the checkpoint and report that... */
-	blocksForCheckpoint = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint;
-	if (blocksForCheckpoint < 0)
-		blocksForCheckpoint = 0;
+	blocksForCheckpoint = yaffs_calc_checkpt_blocks_required(dev);
 
-	nFree -= (blocksForCheckpoint * dev->nChunksPerBlock);
+	nFree -= (blocksForCheckpoint * dev->param.chunks_per_block);
 
 	if (nFree < 0)
 		nFree = 0;
@@ -7504,49 +5518,27 @@ int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev)
 
 }
 
-static int yaffs_freeVerificationFailures;
-
-static void yaffs_VerifyFreeChunks(yaffs_Device *dev)
-{
-	int counted;
-	int difference;
-
-	if (yaffs_SkipVerification(dev))
-		return;
-
-	counted = yaffs_CountFreeChunks(dev);
-
-	difference = dev->nFreeChunks - counted;
-
-	if (difference) {
-		T(YAFFS_TRACE_ALWAYS,
-		  (TSTR("Freechunks verification failure %d %d %d" TENDSTR),
-		   dev->nFreeChunks, counted, difference));
-		yaffs_freeVerificationFailures++;
-	}
-}
 
 /*---------------------------------------- YAFFS test code ----------------------*/
 
-#define yaffs_CheckStruct(structure, syze, name) \
+#define yaffs_check_struct(structure, syze, name) \
 	do { \
 		if (sizeof(structure) != syze) { \
 			T(YAFFS_TRACE_ALWAYS, (TSTR("%s should be %d but is %d\n" TENDSTR),\
-				name, syze, sizeof(structure))); \
+				name, syze, (int) sizeof(structure))); \
 			return YAFFS_FAIL; \
 		} \
 	} while (0)
 
-static int yaffs_CheckStructures(void)
+static int yaffs_check_structures(void)
 {
-/*      yaffs_CheckStruct(yaffs_Tags,8,"yaffs_Tags"); */
-/*      yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion"); */
-/*      yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare"); */
-#ifndef CONFIG_YAFFS_TNODE_LIST_DEBUG
-	yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode");
-#endif
+/*      yaffs_check_struct(yaffs_tags_t,8,"yaffs_tags_t"); */
+/*      yaffs_check_struct(yaffs_tags_union_t,8,"yaffs_tags_union_t"); */
+/*      yaffs_check_struct(yaffs_spare,16,"yaffs_spare"); */
+/*	yaffs_check_struct(yaffs_tnode_t, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_tnode_t"); */
+
 #ifndef CONFIG_YAFFS_WINCE
-	yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader");
+	yaffs_check_struct(yaffs_obj_header, 512, "yaffs_obj_header");
 #endif
 	return YAFFS_OK;
 }