From: Chao Yu Date: Mon, 14 Jul 2014 08:45:15 +0000 (+0800) Subject: f2fs: reduce searching region of segmap when free section X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=f1121ab0ba9ab9c1592049533b511877600f409e;p=deliverable%2Flinux.git f2fs: reduce searching region of segmap when free section In __set_test_and_free we will check whether all segment are free in one section When free one segment, in order to set section to free status. But the searching region of segmap is from start segno to last segno of f2fs, it's not necessary. So let's just only check all segment bitmap of target section. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index 7091204680f4..ee5c75e08d9c 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -347,8 +347,8 @@ static inline void __set_test_and_free(struct f2fs_sb_info *sbi, if (test_and_clear_bit(segno, free_i->free_segmap)) { free_i->free_segments++; - next = find_next_bit(free_i->free_segmap, TOTAL_SEGS(sbi), - start_segno); + next = find_next_bit(free_i->free_segmap, + start_segno + sbi->segs_per_sec, start_segno); if (next >= start_segno + sbi->segs_per_sec) { if (test_and_clear_bit(secno, free_i->free_secmap)) free_i->free_sections++;