v4.19.13 snapshot.
diff --git a/include/linux/fanotify.h b/include/linux/fanotify.h
new file mode 100644
index 0000000..096c96f
--- /dev/null
+++ b/include/linux/fanotify.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_FANOTIFY_H
+#define _LINUX_FANOTIFY_H
+
+#include <uapi/linux/fanotify.h>
+
+/* not valid from userspace, only kernel internal */
+#define FAN_MARK_ONDIR		0x00000100
+#endif /* _LINUX_FANOTIFY_H */