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path: root/fs/yaffs2/yaffs_checkptrw.c
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Diffstat (limited to 'fs/yaffs2/yaffs_checkptrw.c')
-rw-r--r--fs/yaffs2/yaffs_checkptrw.c130
1 files changed, 65 insertions, 65 deletions
diff --git a/fs/yaffs2/yaffs_checkptrw.c b/fs/yaffs2/yaffs_checkptrw.c
index f97ba4b..230f78f 100644
--- a/fs/yaffs2/yaffs_checkptrw.c
+++ b/fs/yaffs2/yaffs_checkptrw.c
@@ -26,27 +26,27 @@ static int yaffs_CheckpointSpaceOk(yaffs_Device *dev)
{
int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks;
-
+
T(YAFFS_TRACE_CHECKPOINT,
(TSTR("checkpt blocks available = %d" TENDSTR),
blocksAvailable));
-
-
+
+
return (blocksAvailable <= 0) ? 0 : 1;
}
static int yaffs_CheckpointErase(yaffs_Device *dev)
{
-
+
int i;
-
- if(!dev->eraseBlockInNAND)
+
+ if(!dev->eraseBlockInNAND)
return 0;
T(YAFFS_TRACE_CHECKPOINT,(TSTR("checking blocks %d to %d"TENDSTR),
dev->internalStartBlock,dev->internalEndBlock));
-
+
for(i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i);
if(bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT){
@@ -62,9 +62,9 @@ static int yaffs_CheckpointErase(yaffs_Device *dev)
}
}
}
-
+
dev->blocksInCheckpoint = 0;
-
+
return 1;
}
@@ -76,11 +76,11 @@ static void yaffs_CheckpointFindNextErasedBlock(yaffs_Device *dev)
T(YAFFS_TRACE_CHECKPOINT,
(TSTR("allocating checkpt block: erased %d reserved %d avail %d next %d "TENDSTR),
dev->nErasedBlocks,dev->nReservedBlocks,blocksAvailable,dev->checkpointNextBlock));
-
+
if(dev->checkpointNextBlock >= 0 &&
dev->checkpointNextBlock <= dev->internalEndBlock &&
blocksAvailable > 0){
-
+
for(i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++){
yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i);
if(bi->blockState == YAFFS_BLOCK_STATE_EMPTY){
@@ -92,7 +92,7 @@ static void yaffs_CheckpointFindNextErasedBlock(yaffs_Device *dev)
}
}
T(YAFFS_TRACE_CHECKPOINT,(TSTR("out of checkpt blocks"TENDSTR)));
-
+
dev->checkpointNextBlock = -1;
dev->checkpointCurrentBlock = -1;
}
@@ -101,19 +101,19 @@ static void yaffs_CheckpointFindNextCheckpointBlock(yaffs_Device *dev)
{
int i;
yaffs_ExtendedTags tags;
-
+
T(YAFFS_TRACE_CHECKPOINT,(TSTR("find next checkpt block: start: blocks %d next %d" TENDSTR),
dev->blocksInCheckpoint, dev->checkpointNextBlock));
-
- if(dev->blocksInCheckpoint < dev->checkpointMaxBlocks)
+
+ if(dev->blocksInCheckpoint < dev->checkpointMaxBlocks)
for(i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++){
int chunk = i * dev->nChunksPerBlock;
int realignedChunk = chunk - dev->chunkOffset;
dev->readChunkWithTagsFromNAND(dev,realignedChunk,NULL,&tags);
- T(YAFFS_TRACE_CHECKPOINT,(TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR),
+ T(YAFFS_TRACE_CHECKPOINT,(TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR),
i, tags.objectId,tags.sequenceNumber,tags.eccResult));
-
+
if(tags.sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA){
/* Right kind of block */
dev->checkpointNextBlock = tags.objectId;
@@ -134,7 +134,7 @@ static void yaffs_CheckpointFindNextCheckpointBlock(yaffs_Device *dev)
int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting)
{
-
+
/* Got the functions we need? */
if (!dev->writeChunkWithTagsToNAND ||
!dev->readChunkWithTagsFromNAND ||
@@ -144,31 +144,31 @@ int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting)
if(forWriting && !yaffs_CheckpointSpaceOk(dev))
return 0;
-
+
if(!dev->checkpointBuffer)
dev->checkpointBuffer = YMALLOC_DMA(dev->nDataBytesPerChunk);
if(!dev->checkpointBuffer)
return 0;
-
+
dev->checkpointPageSequence = 0;
-
+
dev->checkpointOpenForWrite = forWriting;
-
+
dev->checkpointByteCount = 0;
dev->checkpointSum = 0;
dev->checkpointXor = 0;
dev->checkpointCurrentBlock = -1;
dev->checkpointCurrentChunk = -1;
dev->checkpointNextBlock = dev->internalStartBlock;
-
+
/* Erase all the blocks in the checkpoint area */
if(forWriting){
memset(dev->checkpointBuffer,0,dev->nDataBytesPerChunk);
dev->checkpointByteOffset = 0;
return yaffs_CheckpointErase(dev);
-
-
+
+
} else {
int i;
/* Set to a value that will kick off a read */
@@ -181,7 +181,7 @@ int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting)
for(i = 0; i < dev->checkpointMaxBlocks; i++)
dev->checkpointBlockList[i] = -1;
}
-
+
return 1;
}
@@ -200,15 +200,15 @@ static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev)
int realignedChunk;
yaffs_ExtendedTags tags;
-
+
if(dev->checkpointCurrentBlock < 0){
yaffs_CheckpointFindNextErasedBlock(dev);
dev->checkpointCurrentChunk = 0;
}
-
+
if(dev->checkpointCurrentBlock < 0)
return 0;
-
+
tags.chunkDeleted = 0;
tags.objectId = dev->checkpointNextBlock; /* Hint to next place to look */
tags.chunkId = dev->checkpointPageSequence + 1;
@@ -221,25 +221,25 @@ static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev)
bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT;
dev->blocksInCheckpoint++;
}
-
+
chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock + dev->checkpointCurrentChunk;
-
+
T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint wite buffer nand %d(%d:%d) objid %d chId %d" TENDSTR),
- chunk, dev->checkpointCurrentBlock, dev->checkpointCurrentChunk,tags.objectId,tags.chunkId));
-
+ chunk, dev->checkpointCurrentBlock, dev->checkpointCurrentChunk,tags.objectId,tags.chunkId));
+
realignedChunk = chunk - dev->chunkOffset;
-
+
dev->writeChunkWithTagsToNAND(dev,realignedChunk,dev->checkpointBuffer,&tags);
dev->checkpointByteOffset = 0;
- dev->checkpointPageSequence++;
+ dev->checkpointPageSequence++;
dev->checkpointCurrentChunk++;
if(dev->checkpointCurrentChunk >= dev->nChunksPerBlock){
dev->checkpointCurrentChunk = 0;
dev->checkpointCurrentBlock = -1;
}
memset(dev->checkpointBuffer,0,dev->nDataBytesPerChunk);
-
+
return 1;
}
@@ -249,37 +249,37 @@ int yaffs_CheckpointWrite(yaffs_Device *dev,const void *data, int nBytes)
int i=0;
int ok = 1;
-
+
__u8 * dataBytes = (__u8 *)data;
-
-
+
+
if(!dev->checkpointBuffer)
return 0;
-
+
if(!dev->checkpointOpenForWrite)
return -1;
while(i < nBytes && ok) {
-
-
+
+
dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes ;
dev->checkpointSum += *dataBytes;
dev->checkpointXor ^= *dataBytes;
-
+
dev->checkpointByteOffset++;
i++;
dataBytes++;
dev->checkpointByteCount++;
-
-
+
+
if(dev->checkpointByteOffset < 0 ||
- dev->checkpointByteOffset >= dev->nDataBytesPerChunk)
+ dev->checkpointByteOffset >= dev->nDataBytesPerChunk)
ok = yaffs_CheckpointFlushBuffer(dev);
}
-
+
return i;
}
@@ -289,12 +289,12 @@ int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes)
int ok = 1;
yaffs_ExtendedTags tags;
-
+
int chunk;
int realignedChunk;
__u8 *dataBytes = (__u8 *)data;
-
+
if(!dev->checkpointBuffer)
return 0;
@@ -302,31 +302,31 @@ int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes)
return -1;
while(i < nBytes && ok) {
-
-
+
+
if(dev->checkpointByteOffset < 0 ||
dev->checkpointByteOffset >= dev->nDataBytesPerChunk) {
-
+
if(dev->checkpointCurrentBlock < 0){
yaffs_CheckpointFindNextCheckpointBlock(dev);
dev->checkpointCurrentChunk = 0;
}
-
+
if(dev->checkpointCurrentBlock < 0)
ok = 0;
else {
-
- chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock +
+
+ chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock +
dev->checkpointCurrentChunk;
realignedChunk = chunk - dev->chunkOffset;
/* read in the next chunk */
/* printf("read checkpoint page %d\n",dev->checkpointPage); */
- dev->readChunkWithTagsFromNAND(dev, realignedChunk,
+ dev->readChunkWithTagsFromNAND(dev, realignedChunk,
dev->checkpointBuffer,
&tags);
-
+
if(tags.chunkId != (dev->checkpointPageSequence + 1) ||
tags.sequenceNumber != YAFFS_SEQUENCE_CHECKPOINT_DATA)
ok = 0;
@@ -334,12 +334,12 @@ int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes)
dev->checkpointByteOffset = 0;
dev->checkpointPageSequence++;
dev->checkpointCurrentChunk++;
-
+
if(dev->checkpointCurrentChunk >= dev->nChunksPerBlock)
dev->checkpointCurrentBlock = -1;
}
}
-
+
if(ok){
*dataBytes = dev->checkpointBuffer[dev->checkpointByteOffset];
dev->checkpointSum += *dataBytes;
@@ -350,14 +350,14 @@ int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes)
dev->checkpointByteCount++;
}
}
-
+
return i;
}
int yaffs_CheckpointClose(yaffs_Device *dev)
{
- if(dev->checkpointOpenForWrite){
+ if(dev->checkpointOpenForWrite){
if(dev->checkpointByteOffset != 0)
yaffs_CheckpointFlushBuffer(dev);
} else {
@@ -377,19 +377,19 @@ int yaffs_CheckpointClose(yaffs_Device *dev)
dev->nFreeChunks -= dev->blocksInCheckpoint * dev->nChunksPerBlock;
dev->nErasedBlocks -= dev->blocksInCheckpoint;
-
+
T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint byte count %d" TENDSTR),
dev->checkpointByteCount));
-
+
if(dev->checkpointBuffer){
- /* free the buffer */
+ /* free the buffer */
YFREE(dev->checkpointBuffer);
dev->checkpointBuffer = NULL;
return 1;
}
else
return 0;
-
+
}
int yaffs_CheckpointInvalidateStream(yaffs_Device *dev)
generated by cgit v1.1 at 2024-11-06 00:28:26 +0000