xfs_rgbno_to_rtb
ri->ri_startblock = xfs_rgbno_to_rtb(rtg, new_agbno);
xfs_rgbno_to_rtb(to_rtg(cur->bc_group),
xfs_rgbno_to_rtb(rtg, xc->next_bno),
rtbno = xfs_rgbno_to_rtb(sc->sr.rtg, rgbno);
xchk_xref_is_used_rt_space(sc, xfs_rgbno_to_rtb(sc->sr.rtg, 0), 1);
xfs_rgbno_to_rtb(sc->sr.rtg, irec->rc_startblock),
xfs_rgbno_to_rtb(sc->sr.rtg, irec->rm_startblock),
xfs_rgbno_to_rtb(iter->victim_rtg, irec.rm_startblock);