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

[David Hildenbrand <david@redhat.com>]

On 21.03.22 16:16, David Hildenbrand wrote:
> 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?
> 

After verifying that I'm not daydreaming [1] (and realizing that I had
review comments to some of these patches that have not been resolved
yet) and also not spotting these change in your changelog above, I
assume this stuff was included by mistake. NACK to merging
DEVICE_COHERENT at this point.

[1] https://lkml.kernel.org/r/20220310172633.9151-1-alex.sierra@amd.com


-- 
Thanks,

David / dhildenb