ossl_rcu_call
ossl_rcu_call(h->lock, free_oldmd, oldmd);
ossl_rcu_call(h->lock, free_old_neigh_table, oldmd);
ossl_rcu_call(h->lock, free_old_ht_value, *olddata);
ossl_rcu_call(h->lock, free_old_entry, v);
int ossl_rcu_call(CRYPTO_RCU_LOCK *lock, rcu_cb_fn cb, void *data);
ossl_rcu_call(rcu_lock, free_old_rcu_data, old);