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Message-ID: <Yji6plPgEAeWuq38@casper.infradead.org>
Date: Mon, 21 Mar 2022 17:49:26 +0000
From: Matthew Wilcox <willy@...radead.org>
To: David Hildenbrand <david@...hat.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
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 Mon, Mar 21, 2022 at 06:03:11PM +0100, David Hildenbrand wrote:
> > OK, so you object to the last 12 patches from Alistair and Alex? And
> > you're OK with the preceeding 15 patches from Christoph? I can put
> > together a pull request for that combination.
> >
>
> Yes, I'm only concerned about the new feature (DEVICE_COHERENT),
> essentially what is still under discussion in [1] and [2]
> [PATCH v6 00/10] Add MEMORY_DEVICE_COHERENT for coherent device memory
> mapping
> [PATCH v2 0/3] Migrate device coherent pages on get_user_pages()
>
> I think these should be the patches from Alex and Alistair. I'm happy to
> see Christoph's ZONE_DEVICE refocunt changes upstream ;)
OK. I've pushed out folio-5.18c:
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-5.18c
for you to fetch changes up to 2a3c4bce3edb0d54983384aa8a88c0da330638f4:
mm/damon: minor cleanup for damon_pa_young (2022-03-21 13:01:36 -0400)
----------------------------------------------------------------
Folio changes for 5.18
- Rewrite how munlock works to massively reduce the contention
on i_mmap_rwsem (Hugh Dickins):
https://lore.kernel.org/linux-mm/8e4356d-9622-a7f0-b2c-f116b5f2efea@google.com/
- Sort out the page refcount mess for ZONE_DEVICE pages (Christoph Hellwig):
https://lore.kernel.org/linux-mm/20220210072828.2930359-1-hch@lst.de/
- Convert GUP to use folios and make pincount available for order-1
pages. (Matthew Wilcox)
- Convert a few more truncation functions to use folios (Matthew Wilcox)
- Convert page_vma_mapped_walk to use PFNs instead of pages (Matthew Wilcox)
- Convert rmap_walk to use folios (Matthew Wilcox)
- Convert most of shrink_page_list() to use a folio (Matthew Wilcox)
- Add support for creating large folios in readahead (Matthew Wilcox)
----------------------------------------------------------------
Christoph Hellwig (14):
mm: remove a pointless CONFIG_ZONE_DEVICE check in memremap_pages
mm: remove the __KERNEL__ guard from <linux/mm.h>
mm: remove pointless includes from <linux/hmm.h>
mm: move free_devmap_managed_page to memremap.c
mm: simplify freeing of devmap managed pages
mm: don't include <linux/memremap.h> in <linux/mm.h>
mm: remove the extra ZONE_DEVICE struct page refcount
fsdax: depend on ZONE_DEVICE || FS_DAX_LIMITED
mm: generalize the pgmap based page_free infrastructure
mm: refactor check_and_migrate_movable_pages
mm: refactor the ZONE_DEVICE handling in migrate_vma_insert_page
mm: refactor the ZONE_DEVICE handling in migrate_vma_pages
mm: move the migrate_vma_* device migration code into its own file
mm: build migrate_vma_* for all configs with ZONE_DEVICE support
Hugh Dickins (14):
mm/munlock: delete page_mlock() and all its works
mm/munlock: delete FOLL_MLOCK and FOLL_POPULATE
mm/munlock: delete munlock_vma_pages_all(), allow oomreap
mm/munlock: rmap call mlock_vma_page() munlock_vma_page()
mm/munlock: replace clear_page_mlock() by final clearance
mm/munlock: maintain page->mlock_count while unevictable
mm/munlock: mlock_pte_range() when mlocking or munlocking
mm/migrate: __unmap_and_move() push good newpage to LRU
mm/munlock: delete smp_mb() from __pagevec_lru_add_fn()
mm/munlock: mlock_page() munlock_page() batch by pagevec
mm/munlock: page migration needs mlock pagevec drained
mm/thp: collapse_file() do try_to_unmap(TTU_BATCH_FLUSH)
mm/thp: shrink_page_list() avoid splitting VM_LOCKED THP
mm/munlock: mlock_vma_page() check against VM_SPECIAL
Matthew Wilcox (Oracle) (83):
mm/gup: Increment the page refcount before the pincount
mm/gup: Remove for_each_compound_range()
mm/gup: Remove for_each_compound_head()
mm/gup: Change the calling convention for compound_range_next()
mm/gup: Optimise compound_range_next()
mm/gup: Change the calling convention for compound_next()
mm/gup: Fix some contiguous memmap assumptions
mm/gup: Remove an assumption of a contiguous memmap
mm/gup: Handle page split race more efficiently
mm/gup: Remove hpage_pincount_add()
mm/gup: Remove hpage_pincount_sub()
mm: Make compound_pincount always available
mm: Add folio_pincount_ptr()
mm: Turn page_maybe_dma_pinned() into folio_maybe_dma_pinned()
mm/gup: Add try_get_folio() and try_grab_folio()
mm/gup: Convert try_grab_page() to use a folio
mm: Remove page_cache_add_speculative() and page_cache_get_speculative()
mm/gup: Add gup_put_folio()
mm/hugetlb: Use try_grab_folio() instead of try_grab_compound_head()
mm/gup: Convert gup_pte_range() to use a folio
mm/gup: Convert gup_hugepte() to use a folio
mm/gup: Convert gup_huge_pmd() to use a folio
mm/gup: Convert gup_huge_pud() to use a folio
mm/gup: Convert gup_huge_pgd() to use a folio
mm/gup: Turn compound_next() into gup_folio_next()
mm/gup: Turn compound_range_next() into gup_folio_range_next()
mm: Turn isolate_lru_page() into folio_isolate_lru()
mm: Add three folio wrappers
mm/gup: Convert check_and_migrate_movable_pages() to use a folio
mm/workingset: Convert workingset_eviction() to take a folio
mm/memcg: Convert mem_cgroup_swapout() to take a folio
mm: Add lru_to_folio()
mm: Turn putback_lru_page() into folio_putback_lru()
mm/vmscan: Convert __remove_mapping() to take a folio
splice: Use a folio in page_cache_pipe_buf_try_steal()
mm/truncate: Inline invalidate_complete_page() into its one caller
mm/truncate: Convert invalidate_inode_page() to use a folio
mm/truncate: Replace page_mapped() call in invalidate_inode_page()
mm: Convert remove_mapping() to take a folio
mm/truncate: Split invalidate_inode_page() into mapping_evict_folio()
mm/truncate: Convert __invalidate_mapping_pages() to use a folio
mm: Turn deactivate_file_page() into deactivate_file_folio()
mm/truncate: Combine invalidate_mapping_pagevec() and __invalidate_mapping_pages()
fs: Move many prototypes to pagemap.h
mm/vmscan: Turn page_check_dirty_writeback() into folio_check_dirty_writeback()
mm: Turn head_compound_mapcount() into folio_entire_mapcount()
mm: Add folio_mapcount()
mm: Add split_folio_to_list()
mm: Add folio_pgoff()
mm: Add DEFINE_PAGE_VMA_WALK and DEFINE_FOLIO_VMA_WALK
mips: Make pmd_pfn() available in all configurations
powerpc: Add pmd_pfn()
sparc32: Add pmd_pfn()
mm: Convert page_vma_mapped_walk to work on PFNs
mm/page_idle: Convert page_idle_clear_pte_refs() to use a folio
mm/rmap: Use a folio in page_mkclean_one()
mm/mlock: Add mlock_vma_folio()
mm/rmap: Turn page_referenced() into folio_referenced()
mm/huge_memory: Convert __split_huge_pmd() to take a folio
mm/rmap: Convert try_to_unmap() to take a folio
mm/rmap: Convert try_to_migrate() to folios
mm/rmap: Convert make_device_exclusive_range() to use folios
mm/migrate: Convert remove_migration_ptes() to folios
mm/damon: Convert damon_pa_mkold() to use a folio
mm/damon: Convert damon_pa_young() to use a folio
mm/rmap: Turn page_lock_anon_vma_read() into folio_lock_anon_vma_read()
mm: Turn page_anon_vma() into folio_anon_vma()
mm/rmap: Convert rmap_walk() to take a folio
mm/rmap: Constify the rmap_walk_control argument
mm/vmscan: Free non-shmem folios without splitting them
mm/vmscan: Optimise shrink_page_list for non-PMD-sized folios
mm/vmscan: Account large folios correctly
mm/vmscan: Turn page_check_references() into folio_check_references()
mm/vmscan: Convert pageout() to take a folio
mm: Turn can_split_huge_page() into can_split_folio()
mm/filemap: Allow large folios to be added to the page cache
mm: Fix READ_ONLY_THP warning
mm: Make large folios depend on THP
mm: Support arbitrary THP sizes
mm/readahead: Add large folio readahead
mm/readahead: Switch to page_cache_ra_order
mm/filemap: Support VM_HUGEPAGE for file mappings
selftests/vm/transhuge-stress: Support file-backed PMD folios
Miaohe Lin (1):
mm/damon: minor cleanup for damon_pa_young
Mike Rapoport (1):
arch: Add pmd_pfn() where it is missing
William Kucharski (1):
mm/readahead: Align file mappings for non-DAX
Documentation/core-api/pin_user_pages.rst | 18 +-
arch/alpha/include/asm/pgtable.h | 1 +
arch/arc/include/asm/hugepage.h | 1 -
arch/arc/include/asm/pgtable-levels.h | 1 +
arch/arm/include/asm/pgtable-2level.h | 2 +
arch/arm64/mm/mmu.c | 1 +
arch/csky/include/asm/pgtable.h | 1 +
arch/hexagon/include/asm/pgtable.h | 5 +
arch/ia64/include/asm/pgtable.h | 1 +
arch/m68k/include/asm/mcf_pgtable.h | 1 +
arch/m68k/include/asm/motorola_pgtable.h | 1 +
arch/m68k/include/asm/sun3_pgtable.h | 1 +
arch/microblaze/include/asm/pgtable.h | 3 +
arch/mips/include/asm/pgtable.h | 10 +-
arch/nds32/include/asm/pgtable.h | 1 +
arch/nios2/include/asm/pgtable.h | 1 +
arch/openrisc/include/asm/pgtable.h | 1 +
arch/parisc/include/asm/pgtable.h | 1 +
arch/powerpc/include/asm/book3s/32/pgtable.h | 4 +-
arch/powerpc/include/asm/mmu_context.h | 1 -
arch/powerpc/include/asm/nohash/32/pgtable.h | 7 +-
arch/powerpc/include/asm/nohash/64/pgtable.h | 1 +
arch/powerpc/kvm/book3s_hv_uvmem.c | 2 +-
arch/powerpc/mm/book3s64/pgtable.c | 1 +
arch/sh/include/asm/pgtable_32.h | 1 +
arch/sparc/include/asm/pgtable_32.h | 7 +-
arch/um/include/asm/pgtable.h | 1 +
arch/xtensa/include/asm/pgtable.h | 1 +
drivers/block/xen-blkback/xenbus.c | 1 +
drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 2 +-
drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 1 +
drivers/gpu/drm/drm_cache.c | 2 +-
drivers/gpu/drm/nouveau/nouveau_dmem.c | 3 +-
drivers/gpu/drm/nouveau/nouveau_svm.c | 1 +
drivers/infiniband/core/rw.c | 1 +
drivers/nvdimm/pmem.h | 1 +
drivers/nvme/host/pci.c | 1 +
drivers/nvme/target/io-cmd-bdev.c | 1 +
drivers/usb/gadget/function/f_mass_storage.c | 1 +
fs/Kconfig | 2 +-
fs/coda/file.c | 1 +
fs/fuse/virtio_fs.c | 1 +
fs/iomap/fiemap.c | 1 +
fs/nfsd/filecache.c | 1 +
fs/nfsd/vfs.c | 1 +
fs/proc/page.c | 1 +
fs/splice.c | 24 +-
fs/vboxsf/utils.c | 1 +
include/linux/fs.h | 120 ----
include/linux/hmm.h | 9 +-
include/linux/huge_mm.h | 59 +-
include/linux/hugetlb.h | 5 +
include/linux/ksm.h | 6 +-
include/linux/memremap.h | 27 +-
include/linux/mm.h | 296 ++++-----
include/linux/mm_inline.h | 11 +-
include/linux/mm_types.h | 26 +-
include/linux/pagemap.h | 146 ++++-
include/linux/rmap.h | 76 ++-
include/linux/swap.h | 9 +-
include/trace/events/vmscan.h | 10 +-
kernel/events/uprobes.c | 13 +-
kernel/futex/core.c | 2 +-
lib/test_hmm.c | 4 +-
mm/Kconfig | 7 +-
mm/Makefile | 1 +
mm/damon/paddr.c | 62 +-
mm/debug.c | 18 +-
mm/filemap.c | 59 +-
mm/folio-compat.c | 13 +
mm/gup.c | 486 ++++++--------
mm/huge_memory.c | 178 ++----
mm/hugetlb.c | 15 +-
mm/internal.h | 117 ++--
mm/khugepaged.c | 15 +-
mm/ksm.c | 32 +-
mm/madvise.c | 5 +
mm/memcontrol.c | 37 +-
mm/memory-failure.c | 14 +-
mm/memory.c | 45 +-
mm/memory_hotplug.c | 13 +-
mm/memremap.c | 65 +-
mm/migrate.c | 870 ++------------------------
mm/migrate_device.c | 773 +++++++++++++++++++++++
mm/mlock.c | 638 ++++++++-----------
mm/mmap.c | 32 +-
mm/mmzone.c | 7 +
mm/oom_kill.c | 2 +-
mm/page_alloc.c | 3 +-
mm/page_idle.c | 30 +-
mm/page_vma_mapped.c | 58 +-
mm/readahead.c | 108 +++-
mm/rmap.c | 582 +++++++----------
mm/swap.c | 173 ++---
mm/truncate.c | 111 ++--
mm/userfaultfd.c | 14 +-
mm/util.c | 36 +-
mm/vmscan.c | 305 ++++-----
mm/workingset.c | 25 +-
tools/testing/selftests/vm/transhuge-stress.c | 35 +-
100 files changed, 2903 insertions(+), 3025 deletions(-)
create mode 100644 mm/migrate_device.c
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