blk_queue_max_discard_sectors(q, segment_size / SECTOR_SIZE);
q->limits.discard_zeroes_data = 1;
+ if (!ceph_test_opt(rbd_dev->rbd_client->client, NOCRC))
+ q->backing_dev_info.capabilities |= BDI_CAP_STABLE_WRITES;
+
disk->queue = q;
q->queuedata = rbd_dev;