blkif_ring_get_request 551 drivers/block/xen-blkfront.c id = blkif_ring_get_request(rinfo, req, &ring_req); blkif_ring_get_request 740 drivers/block/xen-blkfront.c id = blkif_ring_get_request(rinfo, req, &ring_req); blkif_ring_get_request 790 drivers/block/xen-blkfront.c extra_id = blkif_ring_get_request(rinfo, req,