__ublk_complete_rq
__ublk_complete_rq(req, io, false, NULL);
__ublk_complete_rq(req, io, ublk_dev_need_map_io(ub), NULL);
__ublk_complete_rq(req, io, ublk_dev_need_map_io(ub), NULL);
__ublk_complete_rq(req, io, ublk_dev_need_map_io(data->ub), data->iob);
static inline void __ublk_complete_rq(struct request *req, struct ublk_io *io,