Re: [PATCH RFC nf-next 11/12] netfilter: ipset: remove last region lock usage

Jozsef Kadlecsik <[email protected]> wrote:
> The comment string is kept in struct ip_set_comment_rcu. The whole mess
> about the extension was due to resize copying the pointer of the wrapper
> struct ip_set_comment while ongoing gc could happen. However resize is gone
> now. Re-add from userspace can change the comment string but it can nicely
> be handled with rcu. So as far as I see ext_size remains to be solved and
> the hash types could remain lockless.

Great, thanks Jozsef.  So plan is to make it atomic64_t (which obsoletes
the _slow()) functions added here) which also avoids set->lock for hash
add/del.