Index: sys/sys/refcount.h
===================================================================
--- sys/sys/refcount.h
+++ sys/sys/refcount.h
@@ -52,7 +52,7 @@
 {
 
 	KASSERT(*count < UINT_MAX, ("refcount %p overflowed", count));
-	atomic_add_int(count, 1);
+	atomic_add_acq_int(count, 1);
 }
 
 static __inline int
@@ -88,7 +88,7 @@
 	for (;;) {
 		if (old == 0)
 			return (0);
-		if (atomic_fcmpset_int(count, &old, old + 1))
+		if (atomic_fcmpset_acq_int(count, &old, old + 1))
 			return (1);
 	}
 }
@@ -102,7 +102,7 @@
 	for (;;) {
 		if (old == 1)
 			return (0);
-		if (atomic_fcmpset_int(count, &old, old - 1))
+		if (atomic_fcmpset_rel_int(count, &old, old - 1))
 			return (1);
 	}
 }