calc_dss_id_from_commit
u32 dss_id = calc_dss_id_from_commit(data->lseg, data->ds_commit_index);
dss_id = calc_dss_id_from_commit(cdata->lseg, cdata->ds_commit_index);
dss_id = calc_dss_id_from_commit(cdata->lseg, cdata->ds_commit_index);
dss_id = calc_dss_id_from_commit(lseg, data->ds_commit_index);