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

[Eric Dumazet]

On Tue, 2017-10-17 at 04:16 -0700, Eric Dumazet wrote:
> On Tue, 2017-10-17 at 13:13 +0800, Xin Long wrote:
> 
> > +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.