From a2740dd00da52874d71269eaa06cf4bde549d2fe Mon Sep 17 00:00:00 2001 From: Aaron Pace Date: Mon, 26 Jul 2010 14:24:44 -0600 Subject: [PATCH] ext2fs: Fix optimization bug for doubly-indirect block pointers Doubly-indirect block numbers are compared against the first-level indirect block when checking for a cached copy. This is causing the doubly-indirect block to be re-read each time it is accessed. Repairing this reduces load time for a 70M file from 72 seconds to 38 seconds. Signed-off-by: Aaron Pace --- fs/ext2/ext2fs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext2/ext2fs.c b/fs/ext2/ext2fs.c index 4b391d60a8..a88cf87041 100644 --- a/fs/ext2/ext2fs.c +++ b/fs/ext2/ext2fs.c @@ -364,7 +364,7 @@ static int ext2fs_read_block (ext2fs_node_t node, int fileblock) { indir2_size = blksz; } if ((__le32_to_cpu (indir1_block[rblock / perblock]) << - log2_blksz) != indir1_blkno) { + log2_blksz) != indir2_blkno) { status = ext2fs_devread (__le32_to_cpu(indir1_block[rblock / perblock]) << log2_blksz, 0, blksz, (char *) indir2_block); -- 2.30.2