linux-kernel - Re: [PATCH] ovl: select EXPORTFS

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Date:   Mon, 15 May 2017 11:21:55 +0200
From:   Miklos Szeredi <miklos@...redi.hu>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     "linux-unionfs@...r.kernel.org" <linux-unionfs@...r.kernel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ovl: select EXPORTFS

On Thu, May 11, 2017 at 1:34 PM, Arnd Bergmann <arnd@...db.de> wrote:
> We get a link error when EXPORTFS is not enabled:
>
> ERROR: "exportfs_encode_fh" [fs/overlayfs/overlay.ko] undefined!
> ERROR: "exportfs_decode_fh" [fs/overlayfs/overlay.ko] undefined!
>
> This adds a Kconfig 'select' statement for overlayfs, the same way that
> it is done for the other users of exportfs.
>
> Fixes: 3a1e819b4e80 ("ovl: store file handle of lower inode on copy up")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Thanks, applied.

Miklos

> ---
>  fs/overlayfs/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/fs/overlayfs/Kconfig b/fs/overlayfs/Kconfig
> index 0daac5112f7a..c0c9683934b7 100644
> --- a/fs/overlayfs/Kconfig
> +++ b/fs/overlayfs/Kconfig
> @@ -1,5 +1,6 @@
>  config OVERLAY_FS
>         tristate "Overlay filesystem support"
> +       select EXPORTFS
>         help
>           An overlay filesystem combines two filesystems - an 'upper' filesystem
>           and a 'lower' filesystem.  When a name exists in both filesystems, the
> --
> 2.9.0
>