linux-kernel - Re: Wrong DIF guard tag on ext2 write

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Message-ID: <20100602133748.GA11196@schmichrtp.mainz.de.ibm.com>
Date:	Wed, 2 Jun 2010 15:37:48 +0200
From:	Christof Schmitt <christof.schmitt@...ibm.com>
To:	"Martin K. Petersen" <martin.petersen@...cle.com>
Cc:	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: Wrong DIF guard tag on ext2 write

On Tue, Jun 01, 2010 at 09:16:35AM -0400, Martin K. Petersen wrote:
> >>>>> "Christof" == Christof Schmitt <christof.schmitt@...ibm.com> writes:
> 
> >> Yep, known bug.  Page writeback locking is messed up for buffer_head
> >> users.  The extNfs folks volunteered to look into this a while back
> >> but I don't think they have found the time yet.
> 
> Christof> Thanks for the info. This means that this bug appears with all
> Christof> filesystems?
> 
> XFS and btrfs should be fine.

XFS looks good in my test, thanks for the hint. I am going to use XFS
for anything related to DIF for now. It would be nice to have a
solution that works for all filesystems, but it looks like this will
take some time and work.

Christof
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