284 	object->backing_object = NULL;  in _vm_object_allocate()
591 						temp = robject->backing_object;  in vm_object_deallocate()
602 						temp = robject->backing_object;  in vm_object_deallocate()
627 		temp = object->backing_object;  in vm_object_deallocate()
635 			object->backing_object = NULL;  in vm_object_deallocate()
988 	vm_object_t backing_object;  in vm_object_sync()  local
999 	while ((backing_object = object->backing_object) != NULL) {  in vm_object_sync()
1000 		VM_OBJECT_WLOCK(backing_object);  in vm_object_sync()
1003 		object = backing_object;  in vm_object_sync()
1125 	vm_object_t backing_object, tobject;  in vm_object_madvise()  local
1152 			if (object->backing_object == NULL) {  in vm_object_madvise()
1170 				backing_object = tobject->backing_object;  in vm_object_madvise()
1171 				if (backing_object == NULL)  in vm_object_madvise()
1173 				VM_OBJECT_WLOCK(backing_object);  in vm_object_madvise()
1178 				tobject = backing_object;  in vm_object_madvise()
1279 	result->backing_object = source;  in vm_object_shadow()
1344 	source = orig_object->backing_object;  in vm_object_split()
1363 		new_object->backing_object = source;  in vm_object_split()
1447 	vm_object_t backing_object;  in vm_object_collapse_scan_wait()  local
1450 	backing_object = object->backing_object;  in vm_object_collapse_scan_wait()
1451 	VM_OBJECT_ASSERT_WLOCKED(backing_object);  in vm_object_collapse_scan_wait()
1454 	KASSERT(p == NULL || p->object == object || p->object == backing_object,  in vm_object_collapse_scan_wait()
1455 	    ("invalid ownership %p %p %p", p, object, backing_object));  in vm_object_collapse_scan_wait()
1461 	VM_OBJECT_WUNLOCK(backing_object);  in vm_object_collapse_scan_wait()
1468 	VM_OBJECT_WLOCK(backing_object);  in vm_object_collapse_scan_wait()
1469 	return (TAILQ_FIRST(&backing_object->memq));  in vm_object_collapse_scan_wait()
1475 	vm_object_t backing_object;  in vm_object_scan_all_shadowed()  local
1480 	VM_OBJECT_ASSERT_WLOCKED(object->backing_object);  in vm_object_scan_all_shadowed()
1482 	backing_object = object->backing_object;  in vm_object_scan_all_shadowed()
1484 	if (backing_object->type != OBJT_DEFAULT &&  in vm_object_scan_all_shadowed()
1485 	    backing_object->type != OBJT_SWAP)  in vm_object_scan_all_shadowed()
1489 	p = vm_page_find_least(backing_object, pi);  in vm_object_scan_all_shadowed()
1490 	ps = swap_pager_find_least(backing_object, pi);  in vm_object_scan_all_shadowed()
1500 			ps = swap_pager_find_least(backing_object, pi);  in vm_object_scan_all_shadowed()
1501 		if (p == NULL && ps >= backing_object->size)  in vm_object_scan_all_shadowed()
1531 	vm_object_t backing_object;  in vm_object_collapse_scan()  local
1536 	VM_OBJECT_ASSERT_WLOCKED(object->backing_object);  in vm_object_collapse_scan()
1538 	backing_object = object->backing_object;  in vm_object_collapse_scan()
1545 		vm_object_set_flag(backing_object, OBJ_DEAD);  in vm_object_collapse_scan()
1550 	for (p = TAILQ_FIRST(&backing_object->memq); p != NULL; p = next) {  in vm_object_collapse_scan()
1562 		KASSERT(p->object == backing_object,  in vm_object_collapse_scan()
1567 			if (backing_object->type == OBJT_SWAP)  in vm_object_collapse_scan()
1568 				swap_pager_freespace(backing_object, p->pindex,  in vm_object_collapse_scan()
1614 			if (backing_object->type == OBJT_SWAP)  in vm_object_collapse_scan()
1615 				swap_pager_freespace(backing_object, p->pindex,  in vm_object_collapse_scan()
1640 		if (backing_object->type == OBJT_SWAP)  in vm_object_collapse_scan()
1641 			swap_pager_freespace(backing_object,  in vm_object_collapse_scan()
1648 		vm_reserv_rename(p, object, backing_object,  in vm_object_collapse_scan()
1664 	vm_object_t backing_object = object->backing_object;  in vm_object_qcollapse()  local
1667 	VM_OBJECT_ASSERT_WLOCKED(backing_object);  in vm_object_qcollapse()
1669 	if (backing_object->ref_count != 1)  in vm_object_qcollapse()
1685 	vm_object_t backing_object, new_backing_object;  in vm_object_collapse()  local
1695 		if ((backing_object = object->backing_object) == NULL)  in vm_object_collapse()
1702 		VM_OBJECT_WLOCK(backing_object);  in vm_object_collapse()
1703 		if (backing_object->handle != NULL ||  in vm_object_collapse()
1704 		    (backing_object->type != OBJT_DEFAULT &&  in vm_object_collapse()
1705 		    backing_object->type != OBJT_SWAP) ||  in vm_object_collapse()
1706 		    (backing_object->flags & (OBJ_DEAD | OBJ_NOSPLIT)) != 0 ||  in vm_object_collapse()
1711 			VM_OBJECT_WUNLOCK(backing_object);  in vm_object_collapse()
1716 		    backing_object->paging_in_progress != 0) {  in vm_object_collapse()
1718 			VM_OBJECT_WUNLOCK(backing_object);  in vm_object_collapse()
1732 		if (backing_object->ref_count == 1) {  in vm_object_collapse()
1734 			vm_object_pip_add(backing_object, 1);  in vm_object_collapse()
1746 			if (__predict_false(!LIST_EMPTY(&backing_object->rvq)))  in vm_object_collapse()
1747 				vm_reserv_break_all(backing_object);  in vm_object_collapse()
1753 			if (backing_object->type == OBJT_SWAP) {  in vm_object_collapse()
1763 				    backing_object,  in vm_object_collapse()
1774 			backing_object->shadow_count--;  in vm_object_collapse()
1775 			if (backing_object->backing_object) {  in vm_object_collapse()
1776 				VM_OBJECT_WLOCK(backing_object->backing_object);  in vm_object_collapse()
1777 				LIST_REMOVE(backing_object, shadow_list);  in vm_object_collapse()
1779 				    &backing_object->backing_object->shadow_head,  in vm_object_collapse()
1784 				VM_OBJECT_WUNLOCK(backing_object->backing_object);  in vm_object_collapse()
1786 			object->backing_object = backing_object->backing_object;  in vm_object_collapse()
1788 			    backing_object->backing_object_offset;  in vm_object_collapse()
1797 			KASSERT(backing_object->ref_count == 1, (  in vm_object_collapse()
1799 			    backing_object));  in vm_object_collapse()
1800 			vm_object_pip_wakeup(backing_object);  in vm_object_collapse()
1801 			backing_object->type = OBJT_DEAD;  in vm_object_collapse()
1802 			backing_object->ref_count = 0;  in vm_object_collapse()
1803 			VM_OBJECT_WUNLOCK(backing_object);  in vm_object_collapse()
1804 			vm_object_destroy(backing_object);  in vm_object_collapse()
1815 				VM_OBJECT_WUNLOCK(backing_object);  in vm_object_collapse()
1825 			backing_object->shadow_count--;  in vm_object_collapse()
1827 			new_backing_object = backing_object->backing_object;  in vm_object_collapse()
1828 			if ((object->backing_object = new_backing_object) != NULL) {  in vm_object_collapse()
1839 					backing_object->backing_object_offset;  in vm_object_collapse()
1846 			backing_object->ref_count--;  in vm_object_collapse()
1847 			VM_OBJECT_WUNLOCK(backing_object);  in vm_object_collapse()
2091 	if (prev_object->backing_object != NULL) {  in vm_object_coalesce()
2223 				tobject = tobject->backing_object;  in vm_object_unwire()
2243 				t1object = tobject->backing_object;  in vm_object_unwire()
2257 		t1object = tobject->backing_object;  in vm_object_unwire()
2455 		for (; obj; obj = obj->backing_object)  in _vm_object_in_map()
2504 				    (void *)object->backing_object);  in DB_SHOW_COMMAND()
2536 	    object->backing_object ? object->backing_object->ref_count : 0,  in DB_SHOW_COMMAND()
2537 	    object->backing_object, (uintmax_t)object->backing_object_offset);  in DB_SHOW_COMMAND()