linux-kernel - Re: [f2fs-dev] [PATCH 1/4] f2fs: allocate new section if it's not new

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Date:   Mon, 4 Dec 2023 10:53:10 -0800
From:   Daeho Jeong <daeho43@...il.com>
To:     Jaegeuk Kim <jaegeuk@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [f2fs-dev] [PATCH 1/4] f2fs: allocate new section if it's not new

LGTM

On Mon, Dec 4, 2023 at 10:06 AM Jaegeuk Kim <jaegeuk@...nel.org> wrote:
>
> If fsck can allocate a new zone, it'd be better to use that instead of
> allocating a new one.
>
> And, it modifies kernel messages.
>
> Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
> ---
>  fs/f2fs/segment.c | 33 +++++++++++++++++----------------
>  1 file changed, 17 insertions(+), 16 deletions(-)
>
> diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
> index 08e2f44a1264..9081c9af977a 100644
> --- a/fs/f2fs/segment.c
> +++ b/fs/f2fs/segment.c
> @@ -4949,20 +4949,18 @@ static int check_zone_write_pointer(struct f2fs_sb_info *sbi,
>                 return ret;
>         }
>
> -       if (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
> -               /*
> -                * If there are valid blocks and the write pointer doesn't match
> -                * with them, we need to report the inconsistency and fill
> -                * the zone till the end to close the zone. This inconsistency
> -                * does not cause write error because the zone will not be
> -                * selected for write operation until it get discarded.
> -                */
> -               f2fs_notice(sbi, "Valid blocks are not aligned with write "
> +       /*
> +        * If there are valid blocks and the write pointer doesn't match
> +        * with them, we need to report the inconsistency and fill
> +        * the zone till the end to close the zone. This inconsistency
> +        * does not cause write error because the zone will not be
> +        * selected for write operation until it get discarded.
> +        */
> +       f2fs_notice(sbi, "Valid blocks are not aligned with write "
>                             "pointer: valid block[0x%x,0x%x] wp[0x%x,0x%x]",
>                             GET_SEGNO(sbi, last_valid_block),
>                             GET_BLKOFF_FROM_SEG0(sbi, last_valid_block),
>                             wp_segno, wp_blkoff);
> -       }
>
>         ret = blkdev_zone_mgmt(fdev->bdev, REQ_OP_ZONE_FINISH,
>                                 zone->start, zone->len, GFP_NOFS);
> @@ -5053,15 +5051,18 @@ static int fix_curseg_write_pointer(struct f2fs_sb_info *sbi, int type)
>                 f2fs_notice(sbi, "Unaligned curseg[%d] with write pointer: "
>                             "curseg[0x%x,0x%x] wp[0x%x,0x%x]", type, cs->segno,
>                             cs->next_blkoff, wp_segno, wp_blkoff);
> -       } else {
> -               f2fs_notice(sbi, "Not successfully unmounted in the previous "
> -                           "mount");
>         }
>
> -       f2fs_notice(sbi, "Assign new section to curseg[%d]: "
> -                   "curseg[0x%x,0x%x]", type, cs->segno, cs->next_blkoff);
> +       /* Allocate a new section if it's not new. */
> +       if (cs->next_blkoff) {
> +               unsigned int old_segno = cs->segno, old_blkoff = cs->next_blkoff;
>
> -       f2fs_allocate_new_section(sbi, type, true);
> +               f2fs_allocate_new_section(sbi, type, true);
> +               f2fs_notice(sbi, "Assign new section to curseg[%d]: "
> +                               "[0x%x,0x%x] -> [0x%x,0x%x]",
> +                               type, old_segno, old_blkoff,
> +                               cs->segno, cs->next_blkoff);
> +       }
>
>         /* check consistency of the zone curseg pointed to */
>         if (check_zone_write_pointer(sbi, zbd, &zone))
> --
> 2.43.0.rc2.451.g8631bc7472-goog
>
>
>
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