linux-kernel - Re: [RFC][PATCH 2/9] mm: slub: abstract out double cmpxchg option

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Date:	Tue, 14 Jan 2014 13:41:11 -0800
From:	Dave Hansen <dave@...1.net>
To:	Christoph Lameter <cl@...ux.com>
CC:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, penberg@...nel.org
Subject: Re: [RFC][PATCH 2/9] mm: slub: abstract out double cmpxchg option

On 01/14/2014 11:49 AM, Christoph Lameter wrote:
> On Tue, 14 Jan 2014, Dave Hansen wrote:
>> I found this useful to have in my testing.  I would like to have
>> it available for a bit, at least until other folks have had a
>> chance to do some testing with it.
> 
> I dont really see the point of this patch since we already have
> CONFIG_HAVE_ALIGNED_STRUCT_PAGE to play with.

With the current code, if you wanted to turn off the double-cmpxchg abd
get a 56-byte 'struct page' how would you do it?  Can you do it with a
.config, or do you need to hack the code?
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