Re: [PATCH net] sock_diag: request _diag module only when the family or proto has been registered

On Tue, 2017-10-17 at 04:16 -0700, Eric Dumazet wrote:

On Tue, 2017-10-17 at 13:13 +0800, Xin Long wrote:

quoted

+bool sock_is_registered(int family)
+{
+	return family < NPROTO && rcu_access_pointer(net_families[family]);
+}

EXPORT_SYMBOL() ?

Or move it in net/core/sock_diag.c so that it can be static.