__cds_wfcq_splice_blocking(&default_call_rcu_data->cbs_head,
&default_call_rcu_data->cbs_tail,
&crdp->cbs_head, &crdp->cbs_tail);
__cds_wfcq_splice_blocking(&default_call_rcu_data->cbs_head,
&default_call_rcu_data->cbs_tail,
&crdp->cbs_head, &crdp->cbs_tail);