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Message-ID: <Pine.LNX.4.64.0708141854040.1334@schroedinger.engr.sgi.com>
Date: Tue, 14 Aug 2007 18:56:03 -0700 (PDT)
From: Christoph Lameter <clameter@....com>
To: Michael Ellerman <michael@...erman.id.au>
cc: Lucio Correia <ljhc@...ibm.com>, linux-kernel@...r.kernel.org,
Arnd Bergmann <arndb@...db.de>
Subject: Re: SLUB doesn't work with kdump kernel on Cell
On Wed, 15 Aug 2007, Michael Ellerman wrote:
> > Yes SLUB will fall back but not during bootstrap. Bootstrap needs to
> > carefully place structures on the right nodes. We fail during bootstrap
> > because there is *no* memory available on it.
>
> Sure, you want to have the structures on the right node if possible.
> But seeing as there's no memory available, what is wrong with just
> falling back?
Then you have a useless kmem_cache_node structure that will never be used.
What I could do is an alloc without GFP_THISNODE, check the location of
the allocated memory and then print out a big fat warning that the memory
setup is screwed up?
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