Re: Long delays creating a netns after deleting one (possibly RCU related)

[Eric Dumazet]

On Mon, 2016-11-14 at 16:12 -0600, Eric W. Biederman wrote:

> synchronize_rcu_expidited is not enough if you have multiple network
> devices in play.
> 
> Looking at the code it comes down to this commit, and it appears there
> is a promise add rcu grace period combining by Eric Dumazet.
> 
> Eric since people are hitting noticable stalls because of the rcu grace
> period taking a long time do you think you could look at this code path
> a bit more?
> 
> commit 93d05d4a320cb16712bb3d57a9658f395d8cecb9
> Author: Eric Dumazet <edumazet@xxxxxxxxxx>
> Date:   Wed Nov 18 06:31:03 2015 -0800

Absolutely, I will take a loop asap.

Thanks Eric.