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ext2: Cache line align indirection buffers

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Make ext2 use cache line aligned buffers for reading from the filesystem.
This is needed when caches are enabled because unaligned cache invalidates
are not safe.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2011-12-21 10:01:27 +00:00 committed by Wolfgang Denk
parent aa701b9433
commit 26784f1ecb
1 changed files with 12 additions and 6 deletions
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18
fs/ext2/ext2fs.c
View file

@ -265,7 +265,8 @@ static int ext2fs_read_block (ext2fs_node_t node, int fileblock) {
/* Indirect. */
else if (fileblock < (INDIRECT_BLOCKS + (blksz / 4))) {
if (indir1_block == NULL) {
indir1_block = (uint32_t *) malloc (blksz);
indir1_block = (uint32_t *) memalign(ARCH_DMA_MINALIGN,
blksz);
if (indir1_block == NULL) {
printf ("** ext2fs read block (indir 1) malloc failed. **\n");
return (-1);
@ -278,7 +279,8 @@ static int ext2fs_read_block (ext2fs_node_t node, int fileblock) {
indir1_block = NULL;
indir1_size = 0;
indir1_blkno = -1;
indir1_block = (uint32_t *) malloc (blksz);
indir1_block = (uint32_t *) memalign(ARCH_DMA_MINALIGN,
blksz);
if (indir1_block == NULL) {
printf ("** ext2fs read block (indir 1) malloc failed. **\n");
return (-1);
@ -309,7 +311,8 @@ static int ext2fs_read_block (ext2fs_node_t node, int fileblock) {
+ blksz / 4);
if (indir1_block == NULL) {
indir1_block = (uint32_t *) malloc (blksz);
indir1_block = (uint32_t *) memalign(ARCH_DMA_MINALIGN,
blksz);
if (indir1_block == NULL) {
printf ("** ext2fs read block (indir 2 1) malloc failed. **\n");
return (-1);
@ -322,7 +325,8 @@ static int ext2fs_read_block (ext2fs_node_t node, int fileblock) {
indir1_block = NULL;
indir1_size = 0;
indir1_blkno = -1;
indir1_block = (uint32_t *) malloc (blksz);
indir1_block = (uint32_t *) memalign(ARCH_DMA_MINALIGN,
blksz);
if (indir1_block == NULL) {
printf ("** ext2fs read block (indir 2 1) malloc failed. **\n");
return (-1);
@ -343,7 +347,8 @@ static int ext2fs_read_block (ext2fs_node_t node, int fileblock) {
}
if (indir2_block == NULL) {
indir2_block = (uint32_t *) malloc (blksz);
indir2_block = (uint32_t *) memalign(ARCH_DMA_MINALIGN,
blksz);
if (indir2_block == NULL) {
printf ("** ext2fs read block (indir 2 2) malloc failed. **\n");
return (-1);
@ -356,7 +361,8 @@ static int ext2fs_read_block (ext2fs_node_t node, int fileblock) {
indir2_block = NULL;
indir2_size = 0;
indir2_blkno = -1;
indir2_block = (uint32_t *) malloc (blksz);
indir2_block = (uint32_t *) memalign(ARCH_DMA_MINALIGN,
blksz);
if (indir2_block == NULL) {
printf ("** ext2fs read block (indir 2 2) malloc failed. **\n");
return (-1);