diff options
| author | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-12-06 07:00:58 +0100 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-12-23 02:18:06 +0100 |
| commit | 6bacf52fb58aeb3e89d9a62970b85a5570aa8ace (patch) | |
| tree | 422eb46c144b7ffbae193570a001de2eed490e09 /fs/f2fs/gc.c | |
| parent | f2fs: add unlikely() macro for compiler optimization (diff) | |
| download | linux-6bacf52fb58aeb3e89d9a62970b85a5570aa8ace.tar.xz linux-6bacf52fb58aeb3e89d9a62970b85a5570aa8ace.zip | |
f2fs: add unlikely() macro for compiler more aggressively
This patch adds unlikely() macro into the most of codes.
The basic rule is to add that when:
- checking unusual errors,
- checking page mappings,
- and the other unlikely conditions.
Change log from v1:
- Don't add unlikely for the NULL test and error test: advised by Andi Kleen.
Cc: Chao Yu <chao2.yu@samsung.com>
Cc: Andi Kleen <andi@firstfloor.org>
Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs/gc.c')
| -rw-r--r-- | fs/f2fs/gc.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 2886aef35d59..29ceb9d71c8c 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -119,7 +119,6 @@ int start_gc_thread(struct f2fs_sb_info *sbi) kfree(gc_th); sbi->gc_thread = NULL; } - out: return err; } @@ -695,7 +694,7 @@ int f2fs_gc(struct f2fs_sb_info *sbi) INIT_LIST_HEAD(&ilist); gc_more: - if (!(sbi->sb->s_flags & MS_ACTIVE)) + if (unlikely(!(sbi->sb->s_flags & MS_ACTIVE))) goto stop; if (gc_type == BG_GC && has_not_enough_free_secs(sbi, nfree)) { |