On Mon, Aug 25, 2025 at 05:43:36AM +0100, Al Viro wrote: > Returns the final (topmost) mount in the chain of overmounts > starting at given mount. Same locking rules as for any mount > tree traversal - either the spinlock side of mount_lock, or > rcu + sample the seqcount side of mount_lock before the call > and recheck afterwards. > > Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx> > --- Reviewed-by: Christian Brauner <brauner@xxxxxxxxxx>