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From: Christoph Hellwig <hch@infradead.org>
To: Eric Sandeen <sandeen@sandeen.net>
Cc: Martin Michlmayr <tbm@cyrius.com>,
	Tobias Frost <tobi@coldtobi.de>,
	linux-kernel@vger.kernel.org, debian-arm@lists.debian.org,
	xfs@oss.sgi.com, kernel@wantstofly.org,
	Hiroki KUMAGAI <hiroki.kumagai@toshiba.co.jp>
Subject: Re: XFS filesystem corruption on the arm(el) architecture
Date: Sun, 19 Oct 2008 05:07:02 -0400	[thread overview]
Message-ID: <20081019090702.GA1925@infradead.org> (raw)
In-Reply-To: <48FAA445.9050800@sandeen.net>

On Sat, Oct 18, 2008 at 10:06:45PM -0500, Eric Sandeen 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?  But yes, there
are various problems with I/O on vmap regions with virtually indexed
caches, see:

	http://www.spinics.net/lists/linux-arch/msg04301.html

	http://tree.celinuxforum.org/CelfPubWiki/JapanTechnicalJamboree21?action=AttachFile&do=get&target=celf_discussions.pdf

Actually, looking again at the second document it shows exactly the
symptoms you're seeing.


> 
> -Eric
> 
> 
---end quoted text---

  reply	other threads:[~2008-10-19  9:05 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-01 20:38 XFS filesystem corruption on the arm(el) architecture Tobias Frost
2008-10-02  0:45 ` Dave Chinner
2008-10-02  0:56   ` Eric Sandeen
2008-10-02  1:17   ` Eric Sandeen
2008-10-16 21:25     ` Martin Michlmayr
2008-10-16 22:13       ` Eric Sandeen
2008-10-17  7:01         ` Martin Michlmayr
2008-10-17  9:46           ` Gaudenz Steinlin
2008-10-17 13:49             ` Eric Sandeen
2008-10-18 13:11             ` Tobias Frost
2008-10-18 19:48             ` Kirill A. Shutemov
2008-10-18 20:09               ` Christoph Hellwig
2008-10-18 20:17                 ` Kirill A. Shutemov
2008-10-17 14:15           ` Eric Sandeen
2008-10-18  8:57             ` Martin Michlmayr
2008-10-18 14:48               ` Eric Sandeen
2008-10-19  1:48               ` Dave Chinner
2008-10-19  3:06                 ` Eric Sandeen
2008-10-19  9:07                   ` Christoph Hellwig [this message]
2008-10-19 16:22                     ` Lennert Buytenhek
2008-10-19  5:12                 ` Martin Michlmayr
2008-10-02  1:42   ` Eric Sandeen

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