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    SubjectRe: dev_pagemap related cleanups


    On 2019-06-13 2:21 p.m., Dan Williams wrote:
    > On Thu, Jun 13, 2019 at 1:18 PM Logan Gunthorpe <logang@deltatee.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@lst.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?

    Whatever you feel is best. I'm just hoping they get in sooner rather
    than later. They do fix a bug after all. Let me know if you want me to
    retest the P2PDMA stuff after the rebase.

    Thanks,

    Logan

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