Re: [RFC PATCH V6 1/7] ovl: setup overlayfs' private bdi

From: Jan Kara
Date: Fri Nov 26 2021 - 03:54:09 EST


On Mon 22-11-21 11:00:32, Chengguang Xu wrote:
> From: Chengguang Xu <charliecgxu@xxxxxxxxxxx>
>
> Setup overlayfs' private bdi so that we can collect
> overlayfs' own dirty inodes.
>
> Signed-off-by: Chengguang Xu <charliecgxu@xxxxxxxxxxx>

Looks good. Feel free to add:

Reviewed-by: Jan Kara <jack@xxxxxxx>

Honza

> ---
> fs/overlayfs/super.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
> index 265181c110ae..18a12088a37b 100644
> --- a/fs/overlayfs/super.c
> +++ b/fs/overlayfs/super.c
> @@ -1984,6 +1984,10 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent)
> if (!ofs)
> goto out;
>
> + err = super_setup_bdi(sb);
> + if (err)
> + goto out_err;
> +
> err = -ENOMEM;
> ofs->creator_cred = cred = prepare_creds();
> if (!cred)
> --
> 2.27.0
>
>
--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR