linux-kernel - Re: [PATCH v3 0/4] Devmap cleanups + arm64 support

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Date:   Thu, 4 Jul 2019 11:53:24 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Jason Gunthorpe <jgg@...lanox.com>,
        Christoph Hellwig <hch@...radead.org>,
        Mark Rutland <mark.rutland@....com>,
        Robin Murphy <robin.murphy@....com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "will.deacon@....com" <will.deacon@....com>,
        "catalin.marinas@....com" <catalin.marinas@....com>,
        "anshuman.khandual@....com" <anshuman.khandual@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Michal Hocko <mhocko@...e.com>,
        Robin Murphy <robin.murphy@....com>,
        Dan Williams <dan.j.williams@...el.com>
Subject: Re: [PATCH v3 0/4] Devmap cleanups + arm64 support

On Wed, 26 Jun 2019 20:35:51 -0700 Andrew Morton <akpm@...ux-foundation.org> wrote:

> > Let me know and I can help orchestate this.
> 
> Well.  Whatever works.  In this situation I'd stage the patches after
> linux-next and would merge them up after the prereq patches have been
> merged into mainline.  Easy.

All right, what the hell just happened?  A bunch of new material has
just been introduced into linux-next.  I've partially unpicked the
resulting mess, haven't dared trying to compile it yet.  To get this
far I'll need to drop two patch series and one individual patch:


mm-clean-up-is_device__page-definitions.patch
mm-introduce-arch_has_pte_devmap.patch
arm64-mm-implement-pte_devmap-support.patch
arm64-mm-implement-pte_devmap-support-fix.patch

mm-sparsemem-introduce-struct-mem_section_usage.patch
mm-sparsemem-introduce-a-section_is_early-flag.patch
mm-sparsemem-add-helpers-track-active-portions-of-a-section-at-boot.patch
mm-hotplug-prepare-shrink_zone-pgdat_span-for-sub-section-removal.patch
mm-sparsemem-convert-kmalloc_section_memmap-to-populate_section_memmap.patch
mm-hotplug-kill-is_dev_zone-usage-in-__remove_pages.patch
mm-kill-is_dev_zone-helper.patch
mm-sparsemem-prepare-for-sub-section-ranges.patch
mm-sparsemem-support-sub-section-hotplug.patch
mm-document-zone_device-memory-model-implications.patch
mm-document-zone_device-memory-model-implications-fix.patch
mm-devm_memremap_pages-enable-sub-section-remap.patch
libnvdimm-pfn-fix-fsdax-mode-namespace-info-block-zero-fields.patch
libnvdimm-pfn-stop-padding-pmem-namespaces-to-section-alignment.patch

mm-sparsemem-cleanup-section-number-data-types.patch
mm-sparsemem-cleanup-section-number-data-types-fix.patch


I thought you were just going to move material out of -mm and into
hmm.git.  Didn't begin to suspect that new and quite disruptive
material would be introduced late in -rc7!!