| To: | Eric Sandeen <sandeen@xxxxxxxxxxx> |
|---|---|
| Subject: | Re: XFS filesystem corruption on the arm(el) architecture |
| From: | Christoph Hellwig <hch@xxxxxxxxxxxxx> |
| Date: | Sun, 19 Oct 2008 05:07:02 -0400 |
| Cc: | Martin Michlmayr <tbm@xxxxxxxxxx>, Tobias Frost <tobi@xxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, debian-arm@xxxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx, kernel@xxxxxxxxxxxxxx, Hiroki KUMAGAI <hiroki.kumagai@xxxxxxxxxxxxx> |
| In-reply-to: | <48FAA445.9050800@sandeen.net> |
| References: | <1222893502.5020.40.camel@moria> <20081002004556.GB30001@disturbed> <48E4213E.9090508@sandeen.net> <20081016212500.GA27228@deprecation.cyrius.com> <48F7BC9F.4080909@sandeen.net> <20081017070109.GA30726@deprecation.cyrius.com> <48F89E0F.6030307@sandeen.net> <20081018085752.GS25834@deprecation.cyrius.com> <20081019014830.GI31761@disturbed> <48FAA445.9050800@sandeen.net> |
| Sender: | xfs-bounce@xxxxxxxxxxx |
| User-agent: | Mutt/1.5.18 (2008-05-17) |
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---
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