list_for_each_entry_reverse(scan, &io->ci_layers, cis_linkage) {
if (scan->cis_iop->op[io->ci_type].cio_iter_fini != NULL)
scan->cis_iop->op[io->ci_type].cio_iter_fini(env, scan);
}
list_for_each_entry_reverse(scan, &io->ci_layers, cis_linkage) {
if (scan->cis_iop->op[io->ci_type].cio_iter_fini != NULL)
scan->cis_iop->op[io->ci_type].cio_iter_fini(env, scan);
}