ufs/ffs/ffs_snapshot.c

221 	struct vnode *vp, *xvp, *mvp, *devvp;
530 	MNT_VNODE_FOREACH_ALL(xvp, mp, mvp) {
531 		if ((xvp->v_usecount == 0 &&
532 		     (xvp->v_iflag & (VI_OWEINACT | VI_DOINGINACT)) == 0) ||
533 		    xvp->v_type == VNON ||
534 		    IS_SNAPSHOT(VTOI(xvp))) {
535 			VI_UNLOCK(xvp);
542 		if (xvp == nd.ni_dvp) {
543 			VI_UNLOCK(xvp);
546 		vholdl(xvp);
547 		if (vn_lock(xvp, LK_EXCLUSIVE | LK_INTERLOCK) != 0) {
549 			vdrop(xvp);
552 		VI_LOCK(xvp);
553 		if (xvp->v_usecount == 0 &&
554 		    (xvp->v_iflag & (VI_OWEINACT | VI_DOINGINACT)) == 0) {
555 			VI_UNLOCK(xvp);
556 			VOP_UNLOCK(xvp, 0);
557 			vdrop(xvp);
560 		VI_UNLOCK(xvp);
562 			vn_printf(xvp, "ffs_snapshot: busy vnode ");
563 		if (VOP_GETATTR(xvp, &vat, td->td_ucred) == 0 &&
565 			VOP_UNLOCK(xvp, 0);
566 			vdrop(xvp);
569 		xp = VTOI(xvp);
571 			VOP_UNLOCK(xvp, 0);
572 			vdrop(xvp);
585 				    xvp->v_type, NULL);
602 		VOP_UNLOCK(xvp, 0);
603 		vdrop(xvp);
616 		error = softdep_journal_lookup(mp, &xvp);
623 		xp = VTOI(xvp);
630 		vput(xvp);