userns: Convert omfs to use kuid and kgid where appropriate

Acked-by: Bob Copeland <me@bobcopeland.com>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
diff --git a/fs/omfs/inode.c b/fs/omfs/inode.c
index e6213b3..25d715c 100644
--- a/fs/omfs/inode.c
+++ b/fs/omfs/inode.c
@@ -391,12 +391,16 @@
 		case Opt_uid:
 			if (match_int(&args[0], &option))
 				return 0;
-			sbi->s_uid = option;
+			sbi->s_uid = make_kuid(current_user_ns(), option);
+			if (!uid_valid(sbi->s_uid))
+				return 0;
 			break;
 		case Opt_gid:
 			if (match_int(&args[0], &option))
 				return 0;
-			sbi->s_gid = option;
+			sbi->s_gid = make_kgid(current_user_ns(), option);
+			if (!gid_valid(sbi->s_gid))
+				return 0;
 			break;
 		case Opt_umask:
 			if (match_octal(&args[0], &option))