Re: [PATCH] cgroup/cpuset: fix circular locking dependency

From: Peter Zijlstra
Date: Mon Dec 04 2017 - 18:01:27 EST


On Mon, Dec 04, 2017 at 02:58:25PM -0800, Tejun Heo wrote:
> Hello, again.
>
> On Mon, Dec 04, 2017 at 12:22:19PM -0800, Tejun Heo wrote:
> > Hello,
> >
> > On Mon, Dec 04, 2017 at 10:44:49AM +0530, Prateek Sood wrote:
> > > Any feedback/suggestion for this patch?
> >
> > Sorry about the delay. I'm a bit worried because it feels like we're
> > chasing a squirrel. I'll think through the recent changes and this
> > one and get back to you.
>
> Can you please take a look at the following pending commit?
>
> https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git/commit/?h=for-4.15-fixes&id=e8b3f8db7aad99fcc5234fc5b89984ff6620de3d
>
> AFAICS, this should remove the circular dependency you originally
> reported. I'll revert the two cpuset commits for now.

So I liked his patches in that we would be able to go back to
synchronous sched_domain building.