49 	struct io_uring_sqe *sqe[3];  in null_queue_zc_io()  local
51 	ublk_queue_alloc_sqes(q, sqe, 3);  in null_queue_zc_io()
53 	io_uring_prep_buf_register(sqe[0], 0, tag, q->q_id, tag);  in null_queue_zc_io()
54 	sqe[0]->user_data = build_user_data(tag,  in null_queue_zc_io()
55 			ublk_cmd_op_nr(sqe[0]->cmd_op), 0, 1);  in null_queue_zc_io()
56 	sqe[0]->flags |= IOSQE_CQE_SKIP_SUCCESS | IOSQE_IO_HARDLINK;  in null_queue_zc_io()
58 	io_uring_prep_nop(sqe[1]);  in null_queue_zc_io()
59 	sqe[1]->buf_index = tag;  in null_queue_zc_io()
60 	sqe[1]->flags |= IOSQE_FIXED_FILE | IOSQE_IO_HARDLINK;  in null_queue_zc_io()
61 	sqe[1]->rw_flags = IORING_NOP_FIXED_BUFFER | IORING_NOP_INJECT_RESULT;  in null_queue_zc_io()
62 	sqe[1]->len = iod->nr_sectors << 9; 	/* injected result */  in null_queue_zc_io()
63 	sqe[1]->user_data = build_user_data(tag, ublk_op, 0, 1);  in null_queue_zc_io()
65 	io_uring_prep_buf_unregister(sqe[2], 0, tag, q->q_id, tag);  in null_queue_zc_io()
66 	sqe[2]->user_data = build_user_data(tag, ublk_cmd_op_nr(sqe[2]->cmd_op), 0, 1);  in null_queue_zc_io()