212 	if (q->efd >= 0) {  in __ublksrv_queue_event()
226 		io_uring_prep_poll_add(sqe, q->efd, POLLIN);  in __ublksrv_queue_event()
240 	if (q->efd >= 0) {  in ublksrv_queue_handled_event()
245 		if (read(q->efd, &data, cnt) != cnt)  in ublksrv_queue_handled_event()
269 	if (q->efd >= 0) {  in ublksrv_queue_send_event()
273 		if (write(q->efd, &data, cnt) != cnt) {  in ublksrv_queue_send_event()
350 	if (q->efd >= 0)  in ublksrv_queue_deinit()
351 		close(q->efd);  in ublksrv_queue_deinit()
414 	if ((q->state & UBLKSRV_QUEUE_STOPPING) && q->efd >= 0) {  in ublksrv_kill_eventfd()
418 		ret = write(q->efd, &data, sizeof(uint64_t));  in ublksrv_kill_eventfd()
433 		q->efd = -1;  in ublksrv_setup_eventfd()
449 	q->efd = eventfd(0, 0);  in ublksrv_setup_eventfd()
450 	if (q->efd < 0)  in ublksrv_setup_eventfd()
903 		ret = write(ctx->efd, &data, sizeof(uint64_t));  in ublksrv_submit_aio_batch()