--- zzzz-none-000/linux-4.4.271/include/linux/device-mapper.h	2021-06-03 06:22:09.000000000 +0000
+++ maple-fsgw-759/linux-4.4.271/include/linux/device-mapper.h	2023-12-20 10:37:35.000000000 +0000
@@ -601,4 +601,6 @@
 	return (n << SECTOR_SHIFT);
 }
 
+void dm_end_request(struct request *clone, int error);
+
 #endif	/* _LINUX_DEVICE_MAPPER_H */