Index: sys/kern/kern_rwlock.c
===================================================================
--- sys/kern/kern_rwlock.c	(revision 255760)
+++ sys/kern/kern_rwlock.c	(working copy)
@@ -147,9 +147,9 @@
 
 	rw = (struct rwlock *)lock;
 	if (how)
+		rw_rlock(rw);
+	else
 		rw_wlock(rw);
-	else
-		rw_rlock(rw);
 }
 
 uintptr_t
@@ -161,10 +161,10 @@
 	rw_assert(rw, RA_LOCKED | LA_NOTRECURSED);
 	if (rw->rw_lock & RW_LOCK_READ) {
 		rw_runlock(rw);
-		return (0);
+		return (1);
 	} else {
 		rw_wunlock(rw);
-		return (1);
+		return (0);
 	}
 }
 
Index: sys/kern/kern_sx.c
===================================================================
--- sys/kern/kern_sx.c	(revision 255760)
+++ sys/kern/kern_sx.c	(working copy)
@@ -162,9 +162,9 @@
 
 	sx = (struct sx *)lock;
 	if (how)
+		sx_slock(sx);
+	else
 		sx_xlock(sx);
-	else
-		sx_slock(sx);
 }
 
 uintptr_t
@@ -176,10 +176,10 @@
 	sx_assert(sx, SA_LOCKED | SA_NOTRECURSED);
 	if (sx_xlocked(sx)) {
 		sx_xunlock(sx);
-		return (1);
+		return (0);
 	} else {
 		sx_sunlock(sx);
-		return (0);
+		return (1);
 	}
 }