Re: [RESEND][PATCH] f2fs: avoid victim selection from previous victim section

[Chao Yu]

On 2022/11/22 17:03, Yonggil Song wrote:
> When f2fs chooses GC victim in large section & LFS mode,
> next_victim_seg[gc_type] is referenced first. After segment is freed,
> next_victim_seg[gc_type] has the next segment number.
> However, next_victim_seg[gc_type] still has the last segment number
> even after the last segment of section is freed. In this case, when f2fs
> chooses a victim for the next GC round, the last segment of previous victim
> section is chosen as a victim.
>
> Initialize next_victim_seg[gc_type] to NULL_SEGNO for the last segment in
> large section.
>
> Fixes: e3080b0120a1 ("f2fs: support subsectional garbage collection")
> Signed-off-by: Yonggil Song <yonggil.song@xxxxxxxxxxx>

Reviewed-by: Chao Yu <chao@xxxxxxxxxx>

Thanks,