diff --git a/sys/compat/linuxkpi/common/include/asm/atomic.h b/sys/compat/linuxkpi/common/include/asm/atomic.h
--- a/sys/compat/linuxkpi/common/include/asm/atomic.h
+++ b/sys/compat/linuxkpi/common/include/asm/atomic.h
@@ -307,6 +307,13 @@
 	return (c);						\
 }
 
+static inline int
+atomic_fetch_inc(atomic_t *v)
+{
+
+	return ((atomic_inc_return(v) - 1));
+}
+
 LINUX_ATOMIC_OP(or, |)
 LINUX_ATOMIC_OP(and, &)
 LINUX_ATOMIC_OP(andnot, &~)