srcu_notifier_chain_unregister
ret = srcu_notifier_chain_unregister(&cn->notifier_head, nb);
ret = srcu_notifier_chain_unregister(
ret = srcu_notifier_chain_unregister(
return srcu_notifier_chain_unregister(notify, nb);
srcu_notifier_chain_unregister(&lease_notifier_chain, nb);
extern int srcu_notifier_chain_unregister(struct srcu_notifier_head *nh,
EXPORT_SYMBOL_GPL(srcu_notifier_chain_unregister);