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Commit 0ab14356 authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
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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: default avatarChao Yu <chao2.yu@samsung.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 2304cb0c

fs/f2fs/segment.c

+2 −3
Original line number Diff line number Diff line
@@ -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: