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

To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: XFS filesystem corruption on the arm(el) architecture
From: Lennert Buytenhek <buytenh@xxxxxxxxxxxxxx>
Date: Sun, 19 Oct 2008 18:22:44 +0200
Cc: Eric Sandeen <sandeen@xxxxxxxxxxx>, Martin Michlmayr <tbm@xxxxxxxxxx>, Tobias Frost <tobi@xxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, debian-arm@xxxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx, Hiroki KUMAGAI <hiroki.kumagai@xxxxxxxxxxxxx>
In-reply-to: <20081019090702.GA1925@xxxxxxxxxxxxx>
References: <20081002004556.GB30001@disturbed> <48E4213E.9090508@xxxxxxxxxxx> <20081016212500.GA27228@xxxxxxxxxxxxxxxxxxxxxx> <48F7BC9F.4080909@xxxxxxxxxxx> <20081017070109.GA30726@xxxxxxxxxxxxxxxxxxxxxx> <48F89E0F.6030307@xxxxxxxxxxx> <20081018085752.GS25834@xxxxxxxxxxxxxxxxxxxxxx> <20081019014830.GI31761@disturbed> <48FAA445.9050800@xxxxxxxxxxx> <20081019090702.GA1925@xxxxxxxxxxxxx>
User-agent: Mutt/1.4.2.2i
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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