146     vm_size_t max_ssize, vm_size_t growsize, vm_prot_t prot, vm_prot_t max,
4493 vm_map_stack(vm_map_t map, vm_offset_t addrbos, vm_size_t max_ssize,  in vm_map_stack()  argument
4502 	init_ssize = (max_ssize < growsize) ? max_ssize : growsize;  in vm_map_stack()
4510 	rv = vm_map_stack_locked(map, addrbos, max_ssize, growsize, prot,  in vm_map_stack()
4523 vm_map_stack_locked(vm_map_t map, vm_offset_t addrbos, vm_size_t max_ssize,  in vm_map_stack_locked()  argument
4541 	if (max_ssize == 0 ||  in vm_map_stack_locked()
4542 	    !vm_map_range_valid(map, addrbos, addrbos + max_ssize))  in vm_map_stack_locked()
4547 	if (sgp >= max_ssize)  in vm_map_stack_locked()
4551 	if (max_ssize < init_ssize + sgp)  in vm_map_stack_locked()
4552 		init_ssize = max_ssize - sgp;  in vm_map_stack_locked()
4561 	if (vm_map_entry_succ(prev_entry)->start < addrbos + max_ssize)  in vm_map_stack_locked()
4575 		bot = addrbos + max_ssize - init_ssize;  in vm_map_stack_locked()
4583 		gap_top = addrbos + max_ssize;  in vm_map_stack_locked()