Re: getaddrinfo slowdown in 3.17.1, due to getifaddrs

[Thomas Graf]

On 10/21/14 at 03:25pm, Steinar H. Gunderson wrote:
> On Fri, Oct 17, 2014 at 07:25:17AM +0100, Thomas Graf wrote:
> > I think the only option at this point is to re-add the nltable lock to
> > netlink_lookup() so we can drop the synchronize_net() until we find a
> > way to RCUify socket destruction. I will cook up a patch today unless
> > somebody can come up with a smarter way to work around needing the
> > synchronize_net().
> 
> Did you end up with a patch? We'd like to reboot the server in question
> soon-ish, but it's an open question whether we should go to 3.16.x, revert
> exactly the patches in question or something else.

I'm currently testing the patch below and will submit with proper
tested by attributions later today.