userns: Convert tmpfs to use kuid and kgid where appropriate

Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index 79ab255..bef2cf0 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -28,8 +28,8 @@
 	unsigned long max_inodes;   /* How many inodes are allowed */
 	unsigned long free_inodes;  /* How many are left for allocation */
 	spinlock_t stat_lock;	    /* Serialize shmem_sb_info changes */
-	uid_t uid;		    /* Mount uid for root directory */
-	gid_t gid;		    /* Mount gid for root directory */
+	kuid_t uid;		    /* Mount uid for root directory */
+	kgid_t gid;		    /* Mount gid for root directory */
 	umode_t mode;		    /* Mount mode for root directory */
 	struct mempolicy *mpol;     /* default memory policy for mappings */
 };