linux-kernel - Re: [PATCH 16/25] device-dax: use the dev

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Date:   Fri, 28 Jun 2019 10:08:30 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     Jason Gunthorpe <jgg@...lanox.com>
Cc:     Christoph Hellwig <hch@....de>,
        Jérôme Glisse <jglisse@...hat.com>,
        Ben Skeggs <bskeggs@...hat.com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "nouveau@...ts.freedesktop.org" <nouveau@...ts.freedesktop.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 16/25] device-dax: use the dev_pagemap internal refcount

On Fri, Jun 28, 2019 at 10:02 AM Jason Gunthorpe <jgg@...lanox.com> wrote:
>
> On Fri, Jun 28, 2019 at 09:27:44AM -0700, Dan Williams wrote:
> > On Fri, Jun 28, 2019 at 8:39 AM Jason Gunthorpe <jgg@...lanox.com> wrote:
> > >
> > > On Wed, Jun 26, 2019 at 02:27:15PM +0200, Christoph Hellwig wrote:
> > > > The functionality is identical to the one currently open coded in
> > > > device-dax.
> > > >
> > > > Signed-off-by: Christoph Hellwig <hch@....de>
> > > > Reviewed-by: Ira Weiny <ira.weiny@...el.com>
> > > >  drivers/dax/dax-private.h |  4 ----
> > > >  drivers/dax/device.c      | 43 ---------------------------------------
> > > >  2 files changed, 47 deletions(-)
> > >
> > > DanW: I think this series has reached enough review, did you want
> > > to ack/test any further?
> > >
> > > This needs to land in hmm.git soon to make the merge window.
> >
> > I was awaiting a decision about resolving the collision with Ira's
> > patch before testing the final result again [1]. You can go ahead and
> > add my reviewed-by for the series, but my tested-by should be on the
> > final state of the series.
>
> The conflict looks OK to me, I think we can let Andrew and Linus
> resolve it.
>

Andrew's tree effectively always rebases since it's a quilt series.
I'd recommend pulling Ira's patch out of -mm and applying it with the
rest of hmm reworks. Any other git tree I'd agree with just doing the
late conflict resolution, but I'm not clear on what's the best
practice when conflicting with -mm.