linux-kernel - Re: [GIT PULL] Lockless SLUB slowpaths for v3.1-rc1

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Date:	Fri, 29 Jul 2011 10:04:36 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Pekka Enberg <penberg@...nel.org>
cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	rientjes@...gle.com, hughd@...gle.com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [GIT PULL] Lockless SLUB slowpaths for v3.1-rc1

On Fri, 29 Jul 2011, Pekka Enberg wrote:

> We haven't come up with a solution to keep struct page size the same but I
> think it's a reasonable trade-off.

The change requires the page struct to be aligned to a double word
boundary. There is actually no variable added to the page struct. Its just
the alignment requirement that causes padding to be added after each page
struct.

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