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| author | Wang Shilong <wangsl-fnst@cn.fujitsu.com> | 2013-01-12 13:36:17 +0400 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2013-01-21 14:19:57 +0400 |
| commit | 1b7d76e9b1106f2be062f915b05d47658dd4fc63 (patch) | |
| tree | 986543d21d3b870c54bd9e3280c7ec85fc4384db /fs/ext3/resize.c | |
| parent | 2b0542a4a0d9b8cb98e64fc87c5e31d130029a92 (diff) | |
| download | linux-1b7d76e9b1106f2be062f915b05d47658dd4fc63.tar.xz | |
Ext3: use unlikely to improve the efficiency of the kernel
Because the function 'sb_getblk' seldomly fails to return
NULL value,it will be better to use unlikely to check it.
Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext3/resize.c')
| -rw-r--r-- | fs/ext3/resize.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/ext3/resize.c b/fs/ext3/resize.c index 0f814f3450de..704e8ce7d782 100644 --- a/fs/ext3/resize.c +++ b/fs/ext3/resize.c @@ -116,7 +116,7 @@ static struct buffer_head *bclean(handle_t *handle, struct super_block *sb, int err; bh = sb_getblk(sb, blk); - if (!bh) + if (unlikely(!bh)) return ERR_PTR(-EIO); if ((err = ext3_journal_get_write_access(handle, bh))) { brelse(bh); @@ -234,7 +234,7 @@ static int setup_new_group_blocks(struct super_block *sb, goto exit_bh; gdb = sb_getblk(sb, block); - if (!gdb) { + if (unlikely(!gdb)) { err = -EIO; goto exit_bh; } @@ -722,7 +722,7 @@ static void update_backups(struct super_block *sb, break; bh = sb_getblk(sb, group * bpg + blk_off); - if (!bh) { + if (unlikely(!bh)) { err = -EIO; break; } |