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References: <20210927061747.rijhtovxafsot32z@xzhoux.usersys.redhat.com>
 <20210927115116.GB23909@lst.de> <20210927230259.GA2706839@magnolia>
In-Reply-To: <20210927230259.GA2706839@magnolia>
From: Dan Williams <dan.j.williams@intel.com>
Date: Mon, 27 Sep 2021 16:14:48 -0700
Message-ID: <CAPcyv4j1jSSQNBw991_PPu72Q3he=ctYpaLTSh3AjbJ5nA3UVQ@mail.gmail.com>
Subject: Re: [regression] fs dax xfstests panic
To: "Darrick J. Wong" <djwong@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>, Murphy Zhou <jencce.kernel@gmail.com>, 
	Linux NVDIMM <nvdimm@lists.linux.dev>, linux-fsdevel <linux-fsdevel@vger.kernel.org>
Content-Type: text/plain; charset="UTF-8"

On Mon, Sep 27, 2021 at 4:03 PM Darrick J. Wong <djwong@kernel.org> wrote:
>
> On Mon, Sep 27, 2021 at 01:51:16PM +0200, Christoph Hellwig wrote:
> > On Mon, Sep 27, 2021 at 02:17:47PM +0800, Murphy Zhou wrote:
> > > Hi folks,
> > >
> > > Since this commit:
> > >
> > > commit edb0872f44ec9976ea6d052cb4b93cd2d23ac2ba
> > > Author: Christoph Hellwig <hch@lst.de>
> > > Date:   Mon Aug 9 16:17:43 2021 +0200
> > >
> > >     block: move the bdi from the request_queue to the gendisk
> > >
> > >
> > > Looping xfstests generic/108 or xfs/279 on mountpoints with fsdax
> > > enabled can lead to panic like this:
> >
> > Does this still happen with this series:
> >
> > https://lore.kernel.org/linux-block/20210922172222.2453343-1-hch@lst.de/T/#m8dc646a4dfc40f443227da6bb1c77d9daec524db
> >
> > ?
>
> My test machinse all hit this when writeback throttling is enabled, so
>
> Tested-by: Darrick J. Wong <djwong@kernel.org>

Thanks Darrick, I've added that.