linux-kernel - Re: [linux-next-20130422] Bug in SLAB?

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Message-ID: <CAOJsxLF2ND+x0Du=d7jUKZv+ggYJpbRZaZTbLazfW5qagGTFQA@mail.gmail.com>
Date:	Mon, 6 May 2013 09:32:50 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
	Glauber Costa <glommer@...allels.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [linux-next-20130422] Bug in SLAB?

On Fri, May 3, 2013 at 9:04 PM, Christoph Lameter <cl@...ux.com> wrote:
> Enabling various debugging options increases the size of structures and
> the subslab handling in SLABs kmem_cache_create will start to fail.
>
>
> Here is a fix for that:
>
> Subject: Fix bootstrap creation of kmalloc caches
>
> For SLAB the kmalloc caches must be created in ascending sizes
> in order for the OFF_SLAB sub-slab cache to work properly.
>
> Create the non power of two caches immediately after the prior power
> of two kmalloc cache. Do not create the non power of two caches
> before all other caches.
>
> Signed-off-by: Christoph Lamete <cl@...ux.com>

This doesn't seem to apply against slab/next branch. What tree did you
use to generate the patch?

                        Pekka
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