linux-kernel - Re: [PATCH v2] f2fs: zone: fix to don't trigger OPU on pinfile for direct IO

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Date: Sat, 27 Apr 2024 18:17:51 -0700
From: Daeho Jeong <daeho43@...il.com>
To: Chao Yu <chao@...nel.org>
Cc: jaegeuk@...nel.org, linux-f2fs-devel@...ts.sourceforge.net, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] f2fs: zone: fix to don't trigger OPU on pinfile for
 direct IO

On Sat, Apr 27, 2024 at 6:12 PM Chao Yu <chao@...nel.org> wrote:
>
> Otherwise, it breaks pinfile's sematics.
>
> Cc: Daeho Jeong <daeho43@...il.com>
> Signed-off-by: Chao Yu <chao@...nel.org>
> ---
> v2:
> - fix to disallow OPU on pinfile no matter what device type f2fs uses.
>  fs/f2fs/data.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
> index d8e4434e8801..56600dd43834 100644
> --- a/fs/f2fs/data.c
> +++ b/fs/f2fs/data.c
> @@ -1595,8 +1595,9 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, int flag)
>         }
>
>         /* use out-place-update for direct IO under LFS mode */
> -       if (map->m_may_create &&
> -           (is_hole || (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO))) {
> +       if (map->m_may_create && (is_hole ||
> +               (flag == F2FS_GET_BLOCK_DIO && f2fs_lfs_mode(sbi) &&
> +               !f2fs_is_pinned_file(inode)))) {
>                 if (unlikely(f2fs_cp_error(sbi))) {
>                         err = -EIO;
>                         goto sync_out;
> --
> 2.40.1
>

Reviewed-by: Daeho Jeong <daehojeong@...gle.com>

Thanks,