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Commit 3342bb30 authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
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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: default avatarChao Yu <chao2.yu@samsung.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent a43f7ec3

fs/f2fs/gc.c

+4 −0
Original line number Diff line number Diff line
@@ -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 @@ static int get_victim_by_default(struct f2fs_sb_info *sbi, 
				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;