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

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Message-ID: <yq1pr0akhul.fsf@sermon.lab.mkp.net>
Date:	Tue, 01 Jun 2010 09:22:42 -0400
From:	"Martin K. Petersen" <martin.petersen@...cle.com>
To:	Nick Piggin <npiggin@...e.de>
Cc:	Boaz Harrosh <bharrosh@...asas.com>,
	James Bottomley <James.Bottomley@...e.de>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Christof Schmitt <christof.schmitt@...ibm.com>,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, Chris Mason <chris.mason@...cle.com>
Subject: Re: Wrong DIF guard tag on ext2 write

>>>>> "Nick" == Nick Piggin <npiggin@...e.de> writes:

Nick> More complex and maybe more performant would be to avoid holding
Nick> page lock but wait_on_page_writeback in page-modification (write,
Nick> fault) paths. 

That's what I was doing last I looked at this.  I seem to recall that my
head exploded once I added buffer_heads to the mix.  And then the extfs
folks promised to take a look so I didn't mess more with it.

-- 
Martin K. Petersen	Oracle Linux Engineering
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