Re: dev_pagemap related cleanups

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On Thu, 13 Jun 2019 14:24:20 -0600 Logan Gunthorpe <logang@xxxxxxxxxxxx> wrote:

> 
> 
> On 2019-06-13 2:21 p.m., Dan Williams wrote:
> > On Thu, Jun 13, 2019 at 1:18 PM Logan Gunthorpe <logang@xxxxxxxxxxxx> wrote:
> >>
> >>
> >>
> >> On 2019-06-13 12:27 p.m., Dan Williams wrote:
> >>> On Thu, Jun 13, 2019 at 2:43 AM Christoph Hellwig <hch@xxxxxx> 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.

I had them down for 5.3-rc1.  I'll send them along for 5.2-rc5 instead.





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