vfs: Add a user namespace reference from struct mnt_namespace

This will allow for support for unprivileged mounts in a new user namespace.

Acked-by: "Serge E. Hallyn" <serge@hallyn.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/mount.h b/fs/mount.h
index e9c37dd3d00d..630fafc616bb 100644
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -6,6 +6,7 @@ struct mnt_namespace {
         atomic_t                count;
         struct mount *  root;
         struct list_head        list;
+        struct user_namespace   *user_ns;
         u64                     seq;    /* Sequence number to prevent loops */
         wait_queue_head_t poll;
         int event;