Re: [PATCH] Revert "ceph: enable async dirops by default"

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On Wed, Sep 27, 2023 at 7:02 AM <xiubli@xxxxxxxxxx> wrote:
>
> From: Xiubo Li <xiubli@xxxxxxxxxx>
>
> This reverts commit f7a67b463fb83a4b9b11ceaa8ec4950b8fb7f902.
>
> The async dirop is buggy and introduce several bugs in MDS side
> and not stable yet. Let's disable it for now and enable it later
> when it's ready.
>
> Signed-off-by: Xiubo Li <xiubli@xxxxxxxxxx>
> ---
>  fs/ceph/super.c | 4 ++--
>  fs/ceph/super.h | 3 +--
>  2 files changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/fs/ceph/super.c b/fs/ceph/super.c
> index 5ec102f6b1ac..2bf6ccc9887b 100644
> --- a/fs/ceph/super.c
> +++ b/fs/ceph/super.c
> @@ -742,8 +742,8 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root)
>         if (fsopt->flags & CEPH_MOUNT_OPT_CLEANRECOVER)
>                 seq_show_option(m, "recover_session", "clean");
>
> -       if (!(fsopt->flags & CEPH_MOUNT_OPT_ASYNC_DIROPS))
> -               seq_puts(m, ",wsync");
> +       if (fsopt->flags & CEPH_MOUNT_OPT_ASYNC_DIROPS)
> +               seq_puts(m, ",nowsync");
>         if (fsopt->flags & CEPH_MOUNT_OPT_NOPAGECACHE)
>                 seq_puts(m, ",nopagecache");
>         if (fsopt->flags & CEPH_MOUNT_OPT_SPARSEREAD)
> diff --git a/fs/ceph/super.h b/fs/ceph/super.h
> index 7f4b62182a5d..a5476892896c 100644
> --- a/fs/ceph/super.h
> +++ b/fs/ceph/super.h
> @@ -47,8 +47,7 @@
>
>  #define CEPH_MOUNT_OPT_DEFAULT                 \
>         (CEPH_MOUNT_OPT_DCACHE |                \
> -        CEPH_MOUNT_OPT_NOCOPYFROM |            \
> -        CEPH_MOUNT_OPT_ASYNC_DIROPS)
> +        CEPH_MOUNT_OPT_NOCOPYFROM)
>
>  #define ceph_set_mount_opt(fsc, opt) \
>         (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt
> --
> 2.41.0
>

LGTM.

Requires an explanation on the issue and its impact - let's add that in.

-- 
Cheers,
Venky





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