2528 	int success;  in xen_exchange_memory()  local
2549 	success = (exchange.nr_exchanged == extents_in);  in xen_exchange_memory()
2551 	BUG_ON(!success && ((exchange.nr_exchanged != 0) || (rc == 0)));  in xen_exchange_memory()
2552 	BUG_ON(success && (rc != 0));  in xen_exchange_memory()
2554 	return success;  in xen_exchange_memory()
2563 	int            success;  in xen_create_contiguous_region()  local
2584 	success = xen_exchange_memory(1UL << order, 0, in_frames,  in xen_create_contiguous_region()
2589 	if (success)  in xen_create_contiguous_region()
2597 	return success ? 0 : -ENOMEM;  in xen_create_contiguous_region()
2605 	int success;  in xen_destroy_contiguous_region()  local
2623 	success = xen_exchange_memory(1, order, &in_frame, 1UL << order,  in xen_destroy_contiguous_region()
2627 	if (success)  in xen_destroy_contiguous_region()