--- zzzz-none-000/linux-3.10.107/include/uapi/linux/nbd.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/uapi/linux/nbd.h	2021-02-04 17:41:59.000000000 +0000
@@ -44,8 +44,6 @@
 /* there is a gap here to match userspace */
 #define NBD_FLAG_SEND_TRIM    (1 << 5) /* send trim/discard */
 
-#define nbd_cmd(req) ((req)->cmd[0])
-
 /* userspace doesn't need the nbd_device structure */
 
 /* These are sent over the network in the request/reply magic fields */