VIRTIO_BLK_CTRL_SEGMENTS
VIRTIO_BLK_CTRL_SEGMENTS);
sc->sc_seg_max + VIRTIO_BLK_CTRL_SEGMENTS, "I/O request") != 0)
VIRTIO_BLK_CTRL_SEGMENTS);
VIRTIO_BLK_CTRL_SEGMENTS);
VIRTIO_BLK_CTRL_SEGMENTS);
r = virtio_enqueue_reserve(vsc, vq, slot, VIRTIO_BLK_CTRL_SEGMENTS);