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Date: Thu, 6 Jul 2017 08:34:00 +0200 (CEST)
From: Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [patch V2 0/2] mm/memory_hotplug: Cure potential deadlocks vs.
 cpu hotplug lock
In-Reply-To: <20170705145334.d73a30dda944855349e522ed@linux-foundation.org>
Message-ID: <alpine.DEB.2.20.1707060833130.1771@nanos>
References: <20170704093232.995040438@linutronix.de> <20170705145334.d73a30dda944855349e522ed@linux-foundation.org>
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To: Andrew Morton <akpm@linux-foundation.org>
Cc: LKML <linux-kernel@vger.kernel.org>, linux-mm@kvack.org, Andrey Ryabinin <aryabinin@virtuozzo.com>, Michal Hocko <mhocko@kernel.org>, Vlastimil Babka <vbabka@suse.cz>, Vladimir Davydov <vdavydov.dev@gmail.com>, Peter Zijlstra <peterz@infradead.org>

On Wed, 5 Jul 2017, Andrew Morton wrote:
> On Tue, 04 Jul 2017 11:32:32 +0200 Thomas Gleixner <tglx@linutronix.de> 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.

Thanks,

	tglx

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