rpc_pipefs_notifier_unregister
rpc_pipefs_notifier_unregister(&nfs4blocklayout_block);
rpc_pipefs_notifier_unregister(&nfs4blocklayout_block);
rpc_pipefs_notifier_unregister(&nfs_dns_resolver_block);
rpc_pipefs_notifier_unregister(&nfsd4_cld_block);
extern void rpc_pipefs_notifier_unregister(struct notifier_block *);
return rpc_pipefs_notifier_unregister(&rpc_clients_block);
EXPORT_SYMBOL_GPL(rpc_pipefs_notifier_unregister);