Index: head/sys/compat/linuxkpi/common/include/linux/mutex.h
===================================================================
--- head/sys/compat/linuxkpi/common/include/linux/mutex.h
+++ head/sys/compat/linuxkpi/common/include/linux/mutex.h
@@ -108,6 +108,9 @@
 #define	mutex_init(_m) \
 	linux_mutex_init(_m, mutex_name(#_m), SX_NOWITNESS)
 
+#define	__mutex_init(_m, _n, _l) \
+	linux_mutex_init(_m, _n, SX_NOWITNESS)
+
 #define	mutex_init_witness(_m) \
 	linux_mutex_init(_m, mutex_name(#_m), SX_DUPOK)