nvme_get_request
req = nvme_get_request(&sc->subqueues[0], opcode, NULL, 0);
nvme_request_t *nvme_get_request(nvme_subqueue_t *queue, uint8_t opcode,
req = nvme_get_request(subq, NVME_IOCMD_READ,
req = nvme_get_request(subq, NVME_IOCMD_WRITE,
req = nvme_get_request(subq, NVME_IOCMD_WRITEZ, NULL, 0);
req = nvme_get_request(subq, NVME_IOCMD_FLUSH, NULL, 0);