--- zzzz-none-000/linux-3.10.107/include/linux/sem.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/linux/sem.h	2021-02-04 17:41:59.000000000 +0000
@@ -21,6 +21,7 @@
 	struct list_head	list_id;	/* undo requests on this array */
 	int			sem_nsems;	/* no. of semaphores in array */
 	int			complex_count;	/* pending complex operations */
+	bool			complex_mode;	/* no parallel simple ops */
 };
 
 #ifdef CONFIG_SYSVIPC