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Date:   Tue, 26 Oct 2021 07:53:52 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Dan Williams <dan.j.williams@intel.com>
Cc:     Christoph Hellwig <hch@lst.de>,
        Adam Borowski <kilobyte@angband.pl>,
        Vishal Verma <vishal.l.verma@intel.com>,
        Dave Jiang <dave.jiang@intel.com>,
        Ira Weiny <ira.weiny@intel.com>, Jens Axboe <axboe@kernel.dk>,
        Yi Zhang <yi.zhang@redhat.com>, linux-block@vger.kernel.org,
        Linux NVDIMM <nvdimm@lists.linux.dev>,
        Linux MM <linux-mm@kvack.org>
Subject: Re: [PATCH 2/2] memremap: remove support for external pgmap
 refcounts
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On Mon, Oct 25, 2021 at 06:42:51PM -0700, Dan Williams wrote:
> On Fri, Oct 22, 2021 at 8:43 AM Dan Williams <dan.j.williams@intel.com> wrote:
> >
> > On Thu, Oct 21, 2021 at 10:55 PM Christoph Hellwig <hch@lst.de> wrote:
> > >
> > > On Thu, Oct 21, 2021 at 03:40:17PM +0200, Adam Borowski wrote:
> > > > This breaks at least drivers/pci/p2pdma.c:222
> > >
> > > Indeed.  I've updated this patch, but the fix we need to urgently
> > > get into 5.15-rc is the first one only anyway.
> > >
> > > nvdimm maintainers, can you please act on it ASAP?
> >
> > Yes, I have been pulled in many directions this past week, but I do
> > plan to get this queued for v5.15-rc7.
> 
> Ok, this is passing all my tests and will be pushed out to -next tonight.

FYI, patch 2 needs a trivial compile fix for the p2p case.  But I suspect
given how late in the cycle we are you're only picking up patch 1 anyway.