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

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Message-ID: <20211126085154.GA13004@quack2.suse.cz>
Date:   Fri, 26 Nov 2021 09:51:54 +0100
From:   Jan Kara <jack@...e.cz>
To:     Chengguang Xu <cgxu519@...ernel.net>
Cc:     miklos@...redi.hu, jack@...e.cz, amir73il@...il.com,
        linux-unionfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Chengguang Xu <charliecgxu@...cent.com>
Subject: Re: [RFC PATCH V6 1/7] ovl: setup overlayfs' private bdi

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

Looks good. Feel free to add:

Reviewed-by: Jan Kara <jack@...e.cz>

								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@...e.com>
SUSE Labs, CR