diff -uNr qemu-3.0.0/scsi/qemu-pr-helper.c qemu-3.0.0.mod/scsi/qemu-pr-helper.c
--- qemu-3.0.0/scsi/qemu-pr-helper.c	2018-08-14 22:10:35.000000000 +0300
+++ qemu-3.0.0.mod/scsi/qemu-pr-helper.c	2018-10-26 16:49:45.293598592 +0300
@@ -24,6 +24,8 @@
 #include <linux/dm-ioctl.h>
 #include <scsi/sg.h>
 
+#include "lockf_implementation.h"
+
 #ifdef CONFIG_LIBCAP
 #include <cap-ng.h>
 #endif