BLKIF_OP_DISCARD
case BLKIF_OP_DISCARD:
case BLKIF_OP_DISCARD:
case BLKIF_OP_DISCARD:
if (bret.operation != BLKIF_OP_DISCARD) {
case BLKIF_OP_DISCARD:
[BLKIF_OP_DISCARD] = "discard" };
ring_req->operation = BLKIF_OP_DISCARD;