Index: head/sys/compat/linuxkpi/common/include/linux/math64.h
===================================================================
--- head/sys/compat/linuxkpi/common/include/linux/math64.h
+++ head/sys/compat/linuxkpi/common/include/linux/math64.h
@@ -26,6 +26,7 @@
  *
  * $FreeBSD$
  */
+
 #ifndef _LINUX_MATH64_H
 #define	_LINUX_MATH64_H
 
@@ -40,16 +41,47 @@
 })
 
 static inline uint64_t
+div64_u64_rem(uint64_t dividend, uint64_t divisor, uint64_t *remainder)
+{
+
+	*remainder = dividend % divisor;
+	return (dividend / divisor);
+}
+
+static inline int64_t
+div64_s64(int64_t dividend, int64_t divisor)
+{
+
+	return (dividend / divisor);
+}
+
+static inline uint64_t
+div64_u64(uint64_t dividend, uint64_t divisor)
+{
+
+	return (dividend / divisor);
+}
+
+static inline uint64_t
 div_u64_rem(uint64_t dividend, uint32_t divisor, uint32_t *remainder)
 {
+
 	*remainder = dividend % divisor;
 	return (dividend / divisor);
 }
 
+static inline int64_t
+div_s64(int64_t dividend, int32_t divisor)
+{
+
+	return (dividend / divisor);
+}
+
 static inline uint64_t
 div_u64(uint64_t dividend, uint32_t divisor)
 {
+
 	return (dividend / divisor);
 }
 
-#endif					/* _LINUX_MATH64_H */
+#endif /* _LINUX_MATH64_H */