percpu_ref_kill
percpu_ref_kill(&blkg->refcnt);
percpu_ref_kill(&q->q_usage_counter);
percpu_ref_kill(&wq->wq_active);
percpu_ref_kill(&wq->wq_active);
percpu_ref_kill(&mr->refcount);
percpu_ref_kill(&srv_path->ids_inflight_ref);
percpu_ref_kill(&pctl->active);
percpu_ref_kill(&mddev->active_io);
percpu_ref_kill(&ns->ref);
percpu_ref_kill(&dev->non_ordered);
percpu_ref_kill(&lun->lun_ref);
percpu_ref_kill(&ctx->reqs);
percpu_ref_kill(&ctx->users);
percpu_ref_kill(&ctx->refs);
percpu_ref_kill(&cgrp->bpf.refcnt);
percpu_ref_kill(&im->pcref);
percpu_ref_kill(&im->pcref);
percpu_ref_kill(&root->cgrp.self.refcnt);
percpu_ref_kill(&cgrp->self.refcnt);
percpu_ref_kill(&wb->refcnt);
percpu_ref_kill(&objcg->refcnt);
percpu_ref_kill(&pgmap->ref);
percpu_ref_kill(&p->users);
percpu_ref_kill(&put_pool->ref);
percpu_ref_kill(&binding->ref);
percpu_ref_kill(&lnk->wr_reg_refs);
percpu_ref_kill(&lnk->wr_tx_refs);
percpu_ref_kill(&pgmap->ref);