linux-kernel - Re: [PATCH] nommu: fix kobjsize() for SLOB and SLUB

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Message-ID: <Pine.LNX.4.64.0805281026210.22589@schroedinger.engr.sgi.com>
Date:	Wed, 28 May 2008 10:26:51 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	David Howells <dhowells@...hat.com>
cc:	Pekka J Enberg <penberg@...helsinki.fi>, mpm@...enic.com,
	lethal@...ux-sh.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] nommu: fix kobjsize() for SLOB and SLUB

On Wed, 28 May 2008, David Howells wrote:

> David Howells <dhowells@...hat.com> wrote:
> 
> > Works for SLAB and SLUB.  SLOB breaks well before getting to anything these
> > patches affect.
> 
> Okay...  The problem with SLOB is that it can return large objects (8Kb in this
> case) that aren't 8-byte aligned.  This screws up FRV as it expects to be able
> to use load and store-double instructions, which fault if they don't get
> 8-byte (double register) alignment.

Right. SLAB/SLUB align to long long. SLOB needs to do the same.


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