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authorChao Yu <chao2.yu@samsung.com>2015-10-05 22:20:40 +0800
committerJaegeuk Kim <jaegeuk@kernel.org>2015-10-09 16:20:56 -0700
commit3342bb303bf48dd8bb5ac94c3356489ff53e4d04 (patch)
treed5aa4f6a768a9b50a8ed3662d801a29f285be52d /fs/f2fs
parenta43f7ec327b0d86cbb80d0841673038c0706e714 (diff)
f2fs: skip searching dirty map if dirty segment is not exist
When searching victim during gc, if there are no dirty segments in filesystem, we will still take the time to search the whole dirty segment map, it's not needed, it's better to skip in this condition. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/gc.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index e5c255ba227b..d844a8028527 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -268,6 +268,9 @@ static int get_victim_by_default(struct f2fs_sb_info *sbi,
p.min_segno = NULL_SEGNO;
p.min_cost = max_cost = get_max_cost(sbi, &p);
+ if (p.max_search == 0)
+ goto out;
+
if (p.alloc_mode == LFS && gc_type == FG_GC) {
p.min_segno = check_bg_victims(sbi);
if (p.min_segno != NULL_SEGNO)
@@ -329,6 +332,7 @@ got_it:
sbi->cur_victim_sec,
prefree_segments(sbi), free_segments(sbi));
}
+out:
mutex_unlock(&dirty_i->seglist_lock);
return (p.min_segno == NULL_SEGNO) ? 0 : 1;