linux-kernel - Re: dev_pagemap related cleanups

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Date:   Thu, 13 Jun 2019 14:17:49 -0600
From:   Logan Gunthorpe <logang@...tatee.com>
To:     Dan Williams <dan.j.williams@...el.com>,
        Christoph Hellwig <hch@....de>
Cc:     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 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 ;(

Logan