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Re: [PATCH RFC 10/41] nullfs: use fc_init_pseudo()
- To: Christian Brauner <brauner@xxxxxxxxxx>
- From: Jan Kara <jack@xxxxxxx>
- Date: Tue, 10 Nov 2026 13:57:58 +0100
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- Cc: linux-fsdevel@xxxxxxxxxxxxxxx, Jann Horn <jannh@xxxxxxxxxx>, Chris Mason <mason@xxxxxxxxxx>, Josef Bacik <josef@xxxxxxxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, linux-block@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-nvme@xxxxxxxxxxxxxxxxxxx, Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>, Jan Kara <jack@xxxxxxx>, linux-scsi@xxxxxxxxxxxxxxx, target-devel@xxxxxxxxxxxxxxx, driver-core@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, bpf@xxxxxxxxxxxxxxx, linux-security-module@xxxxxxxxxxxxxxx, selinux@xxxxxxxxxxxxxxx, apparmor@xxxxxxxxxxxxxxxx, linux-nfs@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, fuse-devel@xxxxxxxxxxxxxxx, linux-efi@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, ocfs2-devel@xxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-usb@xxxxxxxxxxxxxxx, Amir Goldstein <amir73il@xxxxxxxxx>, linux-erofs@xxxxxxxxxxxxxxxx, linux-kselftest@xxxxxxxxxxxxxxx
- Delivery-date: Tue, 10 Nov 2026 12:58:00 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Tue 10-11-26 10:14:26, Christian Brauner wrote:
> Initialize nullfs as a pseudo filesystem instead of raising
> SB_I_NOEXEC and SB_I_NODEV by hand. This adds SB_I_PSEUDO.
>
> Signed-off-by: Christian Brauner (Amutable) <brauner@xxxxxxxxxx>
Looks good. Feel free to add:
Reviewed-by: Jan Kara <jack@xxxxxxx>
Honza
> ---
> fs/nullfs.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/fs/nullfs.c b/fs/nullfs.c
> index 319c2f5c5a67..2fe24cb97160 100644
> --- a/fs/nullfs.c
> +++ b/fs/nullfs.c
> @@ -2,6 +2,7 @@
> /* Copyright (c) 2026 Christian Brauner <brauner@xxxxxxxxxx> */
> #include <linux/fs/super_types.h>
> #include <linux/fs_context.h>
> +#include <linux/pseudo_fs.h>
> #include <linux/magic.h>
> #include <linux/splice.h>
> #include <linux/uio.h>
> @@ -174,7 +175,7 @@ static int nullfs_init_fs_context(struct fs_context *fc)
> {
> fc->ops = &nullfs_fs_context_ops;
> fc->sb_flags |= SB_NOUSER;
> - fc->s_iflags |= SB_I_NOEXEC | SB_I_NODEV;
> + fc_init_pseudo(fc);
> return 0;
> }
>
>
> --
> 2.53.0
>
--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR
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