linux-kernel - Re: [GIT PULL] Folio patches for 5.18 (MM part)

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Message-ID: <9ae0a8e4-41b7-04f4-4435-17cbba9850fb@redhat.com>
Date:   Mon, 21 Mar 2022 16:16:44 +0100
From:   David Hildenbrand <david@...hat.com>
To:     Matthew Wilcox <willy@...radead.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Christoph Hellwig <hch@....de>,
        Hugh Dickins <hughd@...gle.com>,
        Alex Sierra <alex.sierra@....com>,
        Alistair Popple <apopple@...dia.com>,
        Miaohe Lin <linmiaohe@...wei.com>,
        Mike Rapoport <rppt@...nel.org>,
        William Kucharski <william.kucharski@...cle.com>
Subject: Re: [GIT PULL] Folio patches for 5.18 (MM part)

On 21.03.22 14:30, Matthew Wilcox wrote:
> Hi Linus,
> 
> This is the first of two folio-related pull requests for this merge
> window.  This is the MM side of things and we had some unfortunate
> complex merge conflicts to resolve.  I decided to redo my changes on
> top of Hugh's and Christoph's patches, so I'm the one sending the
> pull request.
> 
> The following changes since commit f71077a4d84bbe8c7b91b7db7c4ef815755ac5e3:
> 
>   Merge tag 'mmc-v5.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc (2022-02-16 12:09:22 -0800)
> 
> are available in the Git repository at:
> 
>   git://git.infradead.org/users/willy/pagecache.git tags/folio-5.18
> 
> for you to fetch changes up to 5063f22c914e3e5f2239cf91f4986042dc705bde:
> 
>   mm/damon: minor cleanup for damon_pa_young (2022-03-16 10:09:50 -0400)
> 
> ----------------------------------------------------------------
> Folio changes for 5.18
> 
> Several of us had overlapping, conflicting changes to the MM this
> round, and I volunteered to send the pull request.
> 
>  - Hugh rewrote how munlock works to massively reduce the contention
>    on i_mmap_rwsem:
>    https://lore.kernel.org/linux-mm/8e4356d-9622-a7f0-b2c-f116b5f2efea@google.com/
>  - Christoph sorted out the page refcount mess for ZONE_DEVICE pages:
>    https://lore.kernel.org/linux-mm/20220210072828.2930359-1-hch@lst.de/
>  - I converted GUP to use folios and make pincount available for order-1
>    pages.
>  - I converted a few more truncation functions to use folios
>  - I converted page_vma_mapped_walk to use PFNs instead of pages
>  - I converted rmap_walk to use folios
>  - I converted most of shrink_page_list() to use a folio
>  - I added support for creating large folios in readahead
> 
> ----------------------------------------------------------------
> Alex Sierra (10):
>       mm: add zone device coherent type memory support
>       mm: add device coherent vma selection for memory migration
>       mm/gup: fail get_user_pages for LONGTERM dev coherent type
>       drm/amdkfd: add SPM support for SVM
>       drm/amdkfd: coherent type as sys mem on migration to ram
>       lib: test_hmm add ioctl to get zone device type
>       lib: test_hmm add module param for zone device type
>       lib: add support for device coherent type in test_hmm
>       tools: update hmm-test to support device coherent type
>       tools: update test_hmm script to support SP config
> 
> Alistair Popple (2):
>       mm: remove the vma check in migrate_vma_setup()
>       mm/gup: migrate device coherent pages when pinning instead of failing

... I thought DEVICE_COHERENT is still under development?


-- 
Thanks,

David / dhildenb