vfs: garbage collect vrefactn

sys/kern/vfs_subr.c

@@ -2952,19 +2952,6 @@ vrefact(struct vnode *vp)
 #endif
 }
 
-void
-vrefactn(struct vnode *vp, u_int n)
-{
-
-	CTR2(KTR_VFS, "%s: vp %p", __func__, vp);
-#ifdef INVARIANTS
-	int old = atomic_fetchadd_int(&vp->v_usecount, n);
-	VNASSERT(old > 0, vp, ("%s: wrong use count %d", __func__, old));
-#else
-	atomic_add_int(&vp->v_usecount, n);
-#endif
-}
-
 /*
  * Return reference count of a vnode.
  *

sys/sys/vnode.h

@@ -967,7 +967,6 @@ void	vrele(struct vnode *vp);
 void	vref(struct vnode *vp);
 void	vrefl(struct vnode *vp);
 void	vrefact(struct vnode *vp);
-void	vrefactn(struct vnode *vp, u_int n);
 int	vrefcnt(struct vnode *vp);
 void 	v_addpollinfo(struct vnode *vp);