linux-ext4 - Re: upcoming kerneloops.org item: get_page_from

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Message-ID: <alpine.DEB.1.10.0906291703020.21956@gentwo.org>
Date:	Mon, 29 Jun 2009 17:06:37 -0400 (EDT)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Pekka Enberg <penberg@...helsinki.fi>
cc:	Nick Piggin <npiggin@...e.de>, Theodore Tso <tytso@....edu>,
	Eric Sandeen <sandeen@...hat.com>,
	Andreas Dilger <adilger@....com>,
	David Rientjes <rientjes@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	arjan@...radead.org, linux-kernel@...r.kernel.org,
	linux-ext4@...r.kernel.org
Subject: Re: upcoming kerneloops.org item: get_page_from_freelist

On Fri, 26 Jun 2009, Pekka Enberg wrote:

> Yes, but AFAICT, SLUB_DEBUG doesn't respect the given alignment without
> my patch.

The size parameter to calculate_alignment has no relevance unless the size
is smaller than half of the alignment. Then for some reason we do not
properly align the stuff. I never liked that....



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