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f2fs:Fix incomplete search range in f2fs_get_victim when f2fs_need_rand_seg is enabled

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During the f2fs_get_victim process, when the f2fs_need_rand_seg is enabled in select_policy,
p->offset is a random value, and the search range is from p->offset to MAIN_SECS.
When segno >= last_segment, the loop breaks and exits directly without searching
the range from 0 to p->offset.This results in an incomplete search when the random
offset is not zero.

Signed-off-by: liujinbao1 <liujinbao1@xiaomi.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
liujinbao1 2026-02-13 20:26:30 +08:00 committed by Jaegeuk Kim
parent 3cf11e6f36
commit 5604129b65
1 changed files with 3 additions and 2 deletions
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5
fs/f2fs/gc.c
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@ -316,10 +316,11 @@ static void select_policy(struct f2fs_sb_info *sbi, int gc_type,
p->max_search = sbi->max_victim_search;
/* let's select beginning hot/small space first. */
if (f2fs_need_rand_seg(sbi))
if (f2fs_need_rand_seg(sbi)) {
p->offset = get_random_u32_below(MAIN_SECS(sbi) *
SEGS_PER_SEC(sbi));
else if (type == CURSEG_HOT_DATA || IS_NODESEG(type))
SIT_I(sbi)->last_victim[p->gc_mode] = p->offset;
} else if (type == CURSEG_HOT_DATA || IS_NODESEG(type))
p->offset = 0;
else
p->offset = SIT_I(sbi)->last_victim[p->gc_mode];