From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: [GIT PULL] for-2.6.32/bug-fixes
Date: Wed, 18 May 2011 09:24:42 -0400
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> >Well, req->ns_segments = 0, so nseg is zero, which means all
> >of those for loops never get executed.
> 
> This you say is the case for the request you saw the failure with, or
> *all* barrier requests? In the latter case, what do you conclude this

Good question. It was the first barrier request sent when guest tried to
mount the filesystem. I will instrument the code to see what the other
barriers contained when they were sent.
> from?