Index: head/sys/compat/linuxkpi/common/include/linux/jiffies.h
===================================================================
--- head/sys/compat/linuxkpi/common/include/linux/jiffies.h
+++ head/sys/compat/linuxkpi/common/include/linux/jiffies.h
@@ -45,7 +45,9 @@
 #define	MAX_JIFFY_OFFSET	((INT_MAX >> 1) - 1)
 
 #define	time_after(a, b)	((int)((b) - (a)) < 0)
+#define	time_after32(a, b)	((int32_t)((uint32_t)(b) - (uint32_t)(a)) < 0)
 #define	time_before(a, b)	time_after(b,a)
+#define	time_before32(a, b)	time_after32(b, a)
 #define	time_after_eq(a, b)	((int)((a) - (b)) >= 0)
 #define	time_before_eq(a, b)	time_after_eq(b, a)
 #define	time_in_range(a,b,c)	\