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Date: Mon, 16 Jun 2008 06:01:22 -0400
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: XFS errors / BUG / panic, with 2.6.25.7-queue (and older
	2.6.25.y)
Message-ID: <20080616100122.GA1360@infradead.org>
References: <6101e8c40806141241h4a23f7a6ka5366c84130f1291@mail.gmail.com> <48547604.9060700@sandeen.net> <6101e8c40806150538h4372dcedob2ab9c45aa01741c@mail.gmail.com> <48553C11.2060606@sandeen.net> <20080616045221.GJ3700@disturbed>
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To: Eric Sandeen <sandeen@sandeen.net>, Oliver Pinter <oliver.pntr@gmail.com>, xfs@oss.sgi.com

On Mon, Jun 16, 2008 at 02:52:21PM +1000, Dave Chinner wrote:
> > is the first event of interest, it is hitting an assertion on the
> > remount path:
> > 
> >         ASSERT_ALWAYS(atomic_read(&mp->m_active_trans) == 0);
> > 
> > in xfs_attr_quiesce.
> 
> That's caused by a race condition in the VFS w.r.t setting the MS_RDONLY
> flag. It should be fixed in 2.6.26.

I was claiming it would be fixed in 2.6.26 but unfortunately the part of
the the per-mount r/o patches that fixes various bits in remount isn't
there yet.