linux-kernel - Re: XFS filesystem corruption on the arm(el) architecture

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Message-ID: <20081019162244.GF4129@xi.wantstofly.org>
Date:	Sun, 19 Oct 2008 18:22:44 +0200
From:	Lennert Buytenhek <buytenh@...tstofly.org>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Eric Sandeen <sandeen@...deen.net>,
	Martin Michlmayr <tbm@...ius.com>,
	Tobias Frost <tobi@...dtobi.de>, linux-kernel@...r.kernel.org,
	debian-arm@...ts.debian.org, xfs@....sgi.com,
	Hiroki KUMAGAI <hiroki.kumagai@...hiba.co.jp>
Subject: Re: XFS filesystem corruption on the arm(el) architecture

On Sun, Oct 19, 2008 at 05:07:02AM -0400, Christoph Hellwig wrote:

> > This is probably the vmap cache aliasing problem that we paid a bit of
> > attention to a few months ago, no?
> 
> Shouldn't the cachepolicy switch take care of that?

Setting cachepolicy=uncached should make aliasing issues disappear.
If you're still seeing issues with cachepolicy=uncached, it's likely
some other issue.
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