2282 	fnnode_t	*currfnp; /* currently examined node in the tree */  in unmount_subtree()  local
2299 	currfnp = lastfnp = rootfnp;  in unmount_subtree()
2302 	mutex_enter(&currfnp->fn_lock);  in unmount_subtree()
2303 	while (currfnp != rootfnp || rootfnp->fn_unmount_ref_time < timestamp) {  in unmount_subtree()
2304 		curvp = fntovn(currfnp);  in unmount_subtree()
2306 		    (void *)currfnp, currfnp->fn_name));  in unmount_subtree()
2313 		if (currfnp->fn_unmount_ref_time == timestamp &&  in unmount_subtree()
2314 		    currfnp != lastfnp) {  in unmount_subtree()
2315 			(void) try_unmount_node(currfnp, force);  in unmount_subtree()
2316 			lastfnp = currfnp;  in unmount_subtree()
2317 			mutex_enter(&currfnp->fn_lock);  in unmount_subtree()
2328 		if (currfnp->fn_unmount_ref_time >= timestamp ||  in unmount_subtree()
2330 			mutex_exit(&currfnp->fn_lock);  in unmount_subtree()
2335 			rw_enter(&currfnp->fn_parent->fn_rwlock, RW_READER);  in unmount_subtree()
2336 			if ((nextfnp = currfnp->fn_next) != NULL) {  in unmount_subtree()
2338 				rw_exit(&currfnp->fn_parent->fn_rwlock);  in unmount_subtree()
2340 				currfnp = nextfnp;  in unmount_subtree()
2341 				mutex_enter(&currfnp->fn_lock);  in unmount_subtree()
2344 			rw_exit(&currfnp->fn_parent->fn_rwlock);  in unmount_subtree()
2350 			nextfnp = currfnp->fn_parent;  in unmount_subtree()
2353 			currfnp = nextfnp;  in unmount_subtree()
2354 			mutex_enter(&currfnp->fn_lock);  in unmount_subtree()
2362 		if (currfnp->fn_unmount_ref_time < timestamp)  in unmount_subtree()
2363 			currfnp->fn_unmount_ref_time = timestamp;  in unmount_subtree()
2377 		if (!rw_tryenter(&currfnp->fn_rwlock, RW_READER)) {  in unmount_subtree()
2378 			mutex_exit(&currfnp->fn_lock);  in unmount_subtree()
2379 			rw_enter(&currfnp->fn_rwlock, RW_READER);  in unmount_subtree()
2380 			mutex_enter(&currfnp->fn_lock);  in unmount_subtree()
2382 		if (currfnp->fn_flags & MF_INPROG) {  in unmount_subtree()
2383 			rw_exit(&currfnp->fn_rwlock);  in unmount_subtree()
2386 		mutex_exit(&currfnp->fn_lock);  in unmount_subtree()
2393 		if ((nextfnp = currfnp->fn_trigger) != NULL) {  in unmount_subtree()
2395 			rw_exit(&currfnp->fn_rwlock);  in unmount_subtree()
2397 			currfnp = nextfnp;  in unmount_subtree()
2398 			mutex_enter(&currfnp->fn_lock);  in unmount_subtree()
2402 		if ((nextfnp = currfnp->fn_dirents) != NULL) {  in unmount_subtree()
2404 			rw_exit(&currfnp->fn_rwlock);  in unmount_subtree()
2406 			currfnp = nextfnp;  in unmount_subtree()
2407 			mutex_enter(&currfnp->fn_lock);  in unmount_subtree()
2410 		rw_exit(&currfnp->fn_rwlock);  in unmount_subtree()
2430 			currfnp = vntofn(newvp);  in unmount_subtree()
2431 			mutex_enter(&currfnp->fn_lock);  in unmount_subtree()
2435 		mutex_enter(&currfnp->fn_lock);  in unmount_subtree()
2442 	return (try_unmount_node(currfnp, force));  in unmount_subtree()