Index: sys/kern/vfs_default.c
===================================================================
--- sys/kern/vfs_default.c
+++ sys/kern/vfs_default.c
@@ -525,11 +525,8 @@
 	} */ *ap;
 {
 	struct vnode *vp = ap->a_vp;
-	struct mtx *ilk;
 
-	ilk = VI_MTX(vp);
-	return (lockmgr_unlock_fast_path(vp->v_vnlock, ap->a_flags,
-	    &ilk->lock_object));
+	return (lockmgr_unlock_fast_path(vp->v_vnlock, 0, NULL));
 }
 
 /* See above. */
Index: sys/kern/vfs_lookup.c
===================================================================
--- sys/kern/vfs_lookup.c
+++ sys/kern/vfs_lookup.c
@@ -119,14 +119,10 @@
 {
 	struct vnode *vp;
 	struct lock *lk __unused;
-	int flags;
 
 	vp = ap->a_vp;
 	lk = vp->v_vnlock;
-	flags = ap->a_flags;
 
-	if ((flags & LK_INTERLOCK) != 0)
-		VI_UNLOCK(vp);
 	WITNESS_UNLOCK(&lk->lock_object, 0, LOCK_FILE, LOCK_LINE);
 	LOCK_LOG_LOCK("SUNLOCK", &lk->lock_object, 0, 0, LOCK_FILE,
 	    LOCK_LINE);
Index: sys/kern/vfs_subr.c
===================================================================
--- sys/kern/vfs_subr.c
+++ sys/kern/vfs_subr.c
@@ -4881,18 +4881,13 @@
 {
 	struct vop_unlock_args *a = ap;
 
-	if (a->a_flags & LK_INTERLOCK)
-		ASSERT_VI_LOCKED(a->a_vp, "VOP_UNLOCK");
 	ASSERT_VOP_LOCKED(a->a_vp, "VOP_UNLOCK");
 }
 
 void
 vop_unlock_post(void *ap, int rc)
 {
-	struct vop_unlock_args *a = ap;
-
-	if (a->a_flags & LK_INTERLOCK)
-		ASSERT_VI_UNLOCKED(a->a_vp, "VOP_UNLOCK");
+	return;
 }
 #endif
 
Index: sys/kern/vnode_if.src
===================================================================
--- sys/kern/vnode_if.src
+++ sys/kern/vnode_if.src
@@ -384,7 +384,6 @@
 
 vop_unlock {
 	IN struct vnode *vp;
-	IN int flags;
 };