ext2: Cache line align indirection buffers

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>

fs/ext2/ext2fs.c

@@ -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);