[PATCH review 07/11] vfs: Don't create inodes with a uid or gid unknown to the vfs

[Jan Kara]

On Sat 02-07-16 12:20:31, Eric W. Biederman wrote:
> It is expected that filesystems can not represent uids and gids from
> outside of their user namespace.  Keep things simple by not even
> trying to create filesystem nodes with non-sense uids and gids.
> 
> Signed-off-by: "Eric W. Biederman" <ebiederm at xmission.com>

So if we have sb->s_user_ns that doesn't map UID and GID 0, root cannot
directly create files in this filesystem. EOVERFLOW error will at least
hint us where the problem is but still I'm suspecting this is going to
create hard to debug configuration issues... I'm not sure if we can do
anything about this but I wanted to point it out.

								Honza
-- 
Jan Kara <jack at suse.com>
SUSE Labs, CR