switch sysfs attr->mode to umode_t

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index dac0859..d1994ec 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -25,7 +25,7 @@
 
 struct attribute {
 	const char		*name;
-	mode_t			mode;
+	umode_t			mode;
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
 	struct lock_class_key	*key;
 	struct lock_class_key	skey;