percpu_ref_tryget
return blkg && percpu_ref_tryget(&blkg->refcnt);
if (!percpu_ref_tryget(&q->q_usage_counter))
if (!percpu_ref_tryget(&q->q_usage_counter))
if (!percpu_ref_tryget(&q->q_usage_counter))
if (percpu_ref_tryget(&hctx->queue->q_usage_counter)) {
if (!percpu_ref_tryget(&q->q_usage_counter))
if (!percpu_ref_tryget(&q->q_usage_counter)) {
return percpu_ref_tryget(&wb->refcnt);
return percpu_ref_tryget(&css->refcnt);
return percpu_ref_tryget(&objcg->refcnt);
return percpu_ref_tryget(&pool->ref);
return percpu_ref_tryget(&binding->ref);