rq_zone_no
unsigned int zone_no = rq_zone_no(rq);
cmd->ret = zloop_reset_zone(zlo, rq_zone_no(rq));
cmd->ret = zloop_finish_zone(zlo, rq_zone_no(rq));
cmd->ret = zloop_open_zone(zlo, rq_zone_no(rq));
cmd->ret = zloop_close_zone(zlo, rq_zone_no(rq));
unsigned int zone_no = rq_zone_no(rq);