switch open and mkdir syscalls to umode_t

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/internal.h b/fs/internal.h
index 7b1cb15..23599f88 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -88,7 +88,7 @@
 extern void release_open_intent(struct nameidata *);
 struct open_flags {
 	int open_flag;
-	int mode;
+	umode_t mode;
 	int acc_mode;
 	int intent;
 };