taskqgroup_attach
void taskqgroup_attach(struct taskqgroup *qgroup, struct grouptask *grptask,
taskqgroup_attach(tqg, gtask, q, dev, irq->ii_res, name);
taskqgroup_attach(tqg, gtask, q, dev, irq->ii_res, name);
taskqgroup_attach(tqg, gtask, q, dev, irq ? irq->ii_res : NULL,
taskqgroup_attach(qgroup_if_io_tqg, gtask, rxq, dev, res, name);
taskqgroup_attach(qgroup_if_io_tqg, &txq->ift_task, txq, dev, res,
taskqgroup_attach(qgroup_config, gtask, gtask, NULL, NULL, name);