linux-kernel - Re: [PATCH] [4/4] SLAB: Fix node add timer race in cache

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Message-ID: <alpine.DEB.2.00.1002191221110.26567@router.home>
Date:	Fri, 19 Feb 2010 12:22:09 -0600 (CST)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Andi Kleen <andi@...stfloor.org>
cc:	Nick Piggin <npiggin@...e.de>, penberg@...helsinki.fi,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	haicheng.li@...el.com, rientjes@...gle.com
Subject: Re: [PATCH] [4/4] SLAB: Fix node add timer race in cache_reap

On Mon, 15 Feb 2010, Andi Kleen wrote:

> > How, may I ask? cpuup_prepare in the hotplug notifier should always
> > run before start_cpu_timer.
>
> I'm not fully sure, but I have the oops to prove it :)

I still suspect that this has something to do with Pekka's changing the
boot order for allocator bootstrap. Can we clarify why these problems
exist before we try band aid?

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