lkml.org 
[lkml]   [2024]   [Apr]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH] f2fs: zone: fix to don't trigger OPU on pinfile for direct IO
On Fri, Apr 26, 2024 at 3:35 AM Chao Yu <chao@kernel.org> wrote:
>
> Otherwise, it breaks pinfile's sematics.
>
> Cc: Daeho Jeong <daeho43@gmail.com>
> Signed-off-by: Chao Yu <chao@kernel.org>
> ---
> fs/f2fs/data.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
> index bee1e45f76b8..e29000d83d52 100644
> --- a/fs/f2fs/data.c
> +++ b/fs/f2fs/data.c
> @@ -1596,7 +1596,8 @@ 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))) {
> + (is_hole || (flag == F2FS_GET_BLOCK_DIO && (f2fs_lfs_mode(sbi) &&
> + (!f2fs_sb_has_blkzoned(sbi) || !f2fs_is_pinned_file(inode)))))) {
> if (unlikely(f2fs_cp_error(sbi))) {
> err = -EIO;
> goto sync_out;
> --
> 2.40.1

So, we block overwrite io for the pinfile here.

static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)

{
..
if (f2fs_is_pinned_file(inode) &&
!f2fs_overwrite_io(inode, pos, count)) {
ret = -EIO;
goto out_unlock;
}


>

\
 
 \ /
  Last update: 2024-04-26 16:15    [W:0.664 / U:0.052 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site