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| author |   Chao Yu <chao2.yu@samsung.com> | 2016-01-22 17:42:06 +0800 |
|---|---|---|
| committer |   Jaegeuk Kim <jaegeuk@kernel.org> | 2016-02-22 16:07:23 -0800 |
| commit | 0ab143563198055bd45bbb511bb41f5968fdd8bd (patch) | |
| tree | 42e889554c310fcd9da114845aaa0b972ea94d0e /fs/f2fs/segment.c | |
| parent | f2fs: export dirty_nats_ratio in sysfs (diff) | |
| download | linux-dev-0ab143563198055bd45bbb511bb41f5968fdd8bd.tar.xz linux-dev-0ab143563198055bd45bbb511bb41f5968fdd8bd.zip | |
f2fs: correct search area in get_new_segment
get_new_segment starts from current segment position, tries to search a
free segment among its right neighbors locate in same section.
But previously our search area was set as [current segment, max segment],
which means we have to search to more bits in free_segmap bitmap for some
worse cases. So here we correct the search area to [current segment, last
segment in section] to avoid unnecessary searching.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/segment.c')
| -rw-r--r-- | fs/f2fs/segment.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 53baf4a420dc..9e3276067526 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -874,9 +874,8 @@ static void get_new_segment(struct f2fs_sb_info *sbi, if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) { segno = find_next_zero_bit(free_i->free_segmap, - MAIN_SEGS(sbi), *newseg + 1); - if (segno - *newseg < sbi->segs_per_sec - - (*newseg % sbi->segs_per_sec)) + (hint + 1) * sbi->segs_per_sec, *newseg + 1); + if (segno < (hint + 1) * sbi->segs_per_sec) goto got_it; } find_other_zone: |