__rds_send_complete(struct rds_sock *rs, struct rds_message *rm, int status)
{
	struct rm_rdma_op *ro;
	struct rm_atomic_op *ao;

	ro = &rm->rdma;
	if (ro->op_active && ro->op_notify && ro->op_notifier) {
		ro->op_notifier->n_status = status;
		list_add_tail(&ro->op_notifier->n_list, &rs->rs_notify_queue);
		ro->op_notifier = NULL;
	}

	ao = &rm->atomic;
	if (ao->op_active && ao->op_notify && ao->op_notifier) {
		ao->op_notifier->n_status = status;
		list_add_tail(&ao->op_notifier->n_list, &rs->rs_notify_queue);
		ao->op_notifier = NULL;
	}

	/* No need to wake the app - caller does this */
}

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.