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Date:   Tue, 26 Apr 2022 07:53:47 -0700
From:   "Darrick J. Wong" <djwong@kernel.org>
To:     Brian Foster <bfoster@redhat.com>
Cc:     Dave Chinner <david@fromorbit.com>,
        Eric Sandeen <sandeen@sandeen.net>,
        Catherine Hoang <catherine.hoang@oracle.com>,
        linux-xfs@vger.kernel.org
Subject: Re: [PATCH v1 0/2] xfs: remove quota warning limits
Message-ID: <20220426145347.GV17025@magnolia>
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On Tue, Apr 26, 2022 at 10:15:47AM -0400, Brian Foster wrote:
> On Mon, Apr 25, 2022 at 07:43:31PM -0700, Darrick J. Wong wrote:
> ...
> > 
> > The biggest problem right now is that the pagecache is broken in 5.18
> > and apparently I'm the only person who can trigger this.  It's the same
> > problem willy and I have been working on since -rc1 (where the
> > filemap/iomap debug asserts trip on generic/068 and generic/475) that's
> > documented on the fsdevel list.  Unfortunately, I don't have much time
> > to work on this, because as team lead:
> > 
> 
> I seem to be able to reproduce this fairly reliably with generic/068.
> I've started a bisect if it's of any use...

Thank you!  Matthew has hinted that he suspects this is a case of the
page cache returning the wrong folio in certain cases, but neither of us
have been able to narrow it down to a specific commit, or even a range.

--D

> Brian
>