cgroup: propagate mode_t

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 1b7f9d5..a17becc 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -319,7 +319,7 @@
 	 * If not 0, file mode is set to this value, otherwise it will
 	 * be figured out automatically
 	 */
-	mode_t mode;
+	umode_t mode;
 
 	/*
 	 * If non-zero, defines the maximum length of string that can