static struct futex_q *futex_top_waiter(struct futex_hash_bucket *hb,
					union futex_key *key)
{
	struct futex_q *this;

	plist_for_each_entry(this, &hb->chain, list) {
		if (match_futex(&this->key, key))
			return this;
	}
	return NULL;
}
Unknown