139     vm_map_entry_t gap_entry);
4596 vm_map_growstack(vm_map_t map, vm_offset_t addr, vm_map_entry_t gap_entry)  in vm_map_growstack()  argument
4633 	if (gap_entry == NULL && !vm_map_lookup_entry(map, addr, &gap_entry))  in vm_map_growstack()
4635 	if ((gap_entry->eflags & MAP_ENTRY_GUARD) == 0)  in vm_map_growstack()
4637 	if ((gap_entry->eflags & MAP_ENTRY_STACK_GAP_DN) != 0) {  in vm_map_growstack()
4638 		stack_entry = vm_map_entry_succ(gap_entry);  in vm_map_growstack()
4640 		    stack_entry->start != gap_entry->end)  in vm_map_growstack()
4644 	} else if ((gap_entry->eflags & MAP_ENTRY_STACK_GAP_UP) != 0) {  in vm_map_growstack()
4645 		stack_entry = vm_map_entry_pred(gap_entry);  in vm_map_growstack()
4647 		    stack_entry->end != gap_entry->start)  in vm_map_growstack()
4656 	    gap_entry->next_read;  in vm_map_growstack()
4657 	max_grow = gap_entry->end - gap_entry->start;  in vm_map_growstack()
4738 		gap_entry = NULL;  in vm_map_growstack()
4744 		grow_start = gap_entry->end - grow_amount;  in vm_map_growstack()
4745 		if (gap_entry->start + grow_amount == gap_entry->end) {  in vm_map_growstack()
4746 			gap_start = gap_entry->start;  in vm_map_growstack()
4747 			gap_end = gap_entry->end;  in vm_map_growstack()
4748 			vm_map_entry_delete(map, gap_entry);  in vm_map_growstack()
4751 			MPASS(gap_entry->start < gap_entry->end - grow_amount);  in vm_map_growstack()
4752 			vm_map_entry_resize(map, gap_entry, -grow_amount);  in vm_map_growstack()
4766 				vm_map_entry_resize(map, gap_entry,  in vm_map_growstack()
4782 			if (gap_entry->start + grow_amount == gap_entry->end) {  in vm_map_growstack()
4783 				vm_map_entry_delete(map, gap_entry);  in vm_map_growstack()
4787 				gap_entry->start += grow_amount;  in vm_map_growstack()