bsd/vfs/vfs_cache.c

582         vnode_t	old_parentvp = NULLVP;
645 				old_parentvp = vp->v_parent;
649 				if (old_parentvp)
677 	if (old_parentvp) {
682 		        vnode_lock_spin(old_parentvp);
683 			if ((old_parentvp->v_type != VDIR) && (old_parentvp->v_kusecount > 0))
684 				--old_parentvp->v_kusecount;
685 			vnode_unlock(old_parentvp);
700 	        while ( (vp = old_parentvp) != NULLVP ) {
739 				old_parentvp = vp->v_parent;
747 			        old_parentvp = NULLVP;