Re: [PATCH 1/3] slqb: Do not use DEFINE_PER_CPU for per-node data

[Pekka Enberg]

Tejun Heo wrote:
> Pekka Enberg wrote:
> > On Fri, Sep 18, 2009 at 10:34 PM, Mel Gorman <mel@xxxxxxxxx> wrote:
> > > SLQB used a seemingly nice hack to allocate per-node data for the statically
> > > initialised caches. Unfortunately, due to some unknown per-cpu
> > > optimisation, these regions are being reused by something else as the
> > > per-node data is getting randomly scrambled. This patch fixes the
> > > problem but it's not fully understood *why* it fixes the problem at the
> > > moment.
> > Ouch, that sounds bad. I guess it's architecture specific bug as x86
> > works ok? Lets CC Tejun.
>
> Is the corruption being seen on ppc or s390?

On ppc.
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