linux-kernel - Re: dev_pagemap related cleanups

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Message-ID: <CAPcyv4hx=ng3SxzAWd8s_8VtAfoiiWhiA5kodi9KPc=jGmnejg@mail.gmail.com>
Date:   Thu, 13 Jun 2019 13:21:27 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     Logan Gunthorpe <logang@...tatee.com>
Cc:     Christoph Hellwig <hch@....de>,
        linux-nvdimm <linux-nvdimm@...ts.01.org>,
        nouveau@...ts.freedesktop.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Maling list - DRI developers 
        <dri-devel@...ts.freedesktop.org>, Linux MM <linux-mm@...ck.org>,
        Jérôme Glisse <jglisse@...hat.com>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Ben Skeggs <bskeggs@...hat.com>, linux-pci@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: dev_pagemap related cleanups

On Thu, Jun 13, 2019 at 1:18 PM Logan Gunthorpe <logang@...tatee.com> wrote:
>
>
>
> On 2019-06-13 12:27 p.m., Dan Williams wrote:
> > On Thu, Jun 13, 2019 at 2:43 AM Christoph Hellwig <hch@....de> wrote:
> >>
> >> Hi Dan, Jérôme and Jason,
> >>
> >> below is a series that cleans up the dev_pagemap interface so that
> >> it is more easily usable, which removes the need to wrap it in hmm
> >> and thus allowing to kill a lot of code
> >>
> >> Diffstat:
> >>
> >>  22 files changed, 245 insertions(+), 802 deletions(-)
> >
> > Hooray!
> >
> >> Git tree:
> >>
> >>     git://git.infradead.org/users/hch/misc.git hmm-devmem-cleanup
> >
> > I just realized this collides with the dev_pagemap release rework in
> > Andrew's tree (commit ids below are from next.git and are not stable)
> >
> > 4422ee8476f0 mm/devm_memremap_pages: fix final page put race
> > 771f0714d0dc PCI/P2PDMA: track pgmap references per resource, not globally
> > af37085de906 lib/genalloc: introduce chunk owners
> > e0047ff8aa77 PCI/P2PDMA: fix the gen_pool_add_virt() failure path
> > 0315d47d6ae9 mm/devm_memremap_pages: introduce devm_memunmap_pages
> > 216475c7eaa8 drivers/base/devres: introduce devm_release_action()
> >
> > CONFLICT (content): Merge conflict in tools/testing/nvdimm/test/iomap.c
> > CONFLICT (content): Merge conflict in mm/hmm.c
> > CONFLICT (content): Merge conflict in kernel/memremap.c
> > CONFLICT (content): Merge conflict in include/linux/memremap.h
> > CONFLICT (content): Merge conflict in drivers/pci/p2pdma.c
> > CONFLICT (content): Merge conflict in drivers/nvdimm/pmem.c
> > CONFLICT (content): Merge conflict in drivers/dax/device.c
> > CONFLICT (content): Merge conflict in drivers/dax/dax-private.h
> >
> > Perhaps we should pull those out and resend them through hmm.git?
>
> Hmm, I've been waiting for those patches to get in for a little while now ;(

Unless Andrew was going to submit as v5.2-rc fixes I think I should
rebase / submit them on current hmm.git and then throw these cleanups
from Christoph on top?