Re: [patch V2 0/2] mm/memory_hotplug: Cure potential deadlocks vs. cpu hotplug lock

From: Thomas Gleixner
Date: Thu Jul 06 2017 - 02:34:11 EST

On Wed, 5 Jul 2017, Andrew Morton wrote:
> On Tue, 04 Jul 2017 11:32:32 +0200 Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
> > Andrey reported a potential deadlock with the memory hotplug lock and the
> > cpu hotplug lock.
> >
> > The following series addresses this by reworking the memory hotplug locking
> > and fixing up the potential deadlock scenarios.
> Do you think we should squeeze this into 4.13-rc1, or can we afford to
> take the more cautious route?

The deadlocks are real and the lockdep splats are triggering on Linus head,
so it should go into 4.13-rc1 if possible.