rgrp_contains_block
if (!rgrp_contains_block(rgd, bn)) {
if (rgrp_contains_block(rgd, ip->i_goal))
rgrp_contains_block(rs->rs_rgd, ip->i_goal)) {
if (!dinode && rgrp_contains_block(rbm->rgd, ip->i_goal))
if (rgrp_contains_block(rgd, block))
if (!rgd || !rgrp_contains_block(rgd, block))
if (!rgrp_contains_block(rbm->rgd, block))