hammer_xlate_to_zoneX
hammer_off_t zone4_offset = hammer_xlate_to_zoneX(
hammer_off_t zone4_offset = hammer_xlate_to_zoneX(
offset = hammer_xlate_to_zoneX(zone, offset);
base_offset = hammer_xlate_to_zoneX(resv->zone, resv->zone_offset);
hammer_xlate_to_zoneX(HAMMER_ZONE_RAW_BUFFER_INDEX, (offset))