linux-kernel - Re: [rfc][patch 1/3] slub: fix small HWCACHE

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Message-ID: <Pine.LNX.4.64.0803061453360.16212@schroedinger.engr.sgi.com>
Date:	Thu, 6 Mar 2008 14:56:42 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Nick Piggin <npiggin@...e.de>
cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, yanmin_zhang@...ux.intel.com,
	dada1@...mosbay.com
Subject: Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment

On Thu, 6 Mar 2008, Nick Piggin wrote:

> There looks like definitely some networking slabs that pass the flag
> and can be non-power-of-2. And don't forget cachelines can be anywhere
> up to 256 bytes in size. So yeah it definitely makes sense to merge
> the patch and then examine the callers if you feel strongly about it.

Just do not like to add fluff that has basically no effect. I just tried 
to improve things by not doing anything special if we cannot cacheline 
align object. Least surprise (at least for me). It is bad enough that we 
just decide to ignore the request for alignment for small caches.




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