Whole series availabke through git, and shortly in linux-next: https://git.infradead.org/users/willy/pagecache.git/shortlog/refs/heads/for-next or git://git.infradead.org/users/willy/pagecache.git for-next The first few patches should look familiar to most; these are converting the GUP code to folios (and a few other things). Most are well-reviewed, but I did have to make significant changes to a few patches to accommodate John's recent bugfix, so I dropped the R-b from them. After the GUP changes, I started working on vmscan, trying to convert all of shrink_page_list() to use a folio. The pages it works on are folios by definition (since they're chained through ->lru and ->lru occupies the same bytes of memory as ->compound_head, so they can't be tail pages). This is a ridiculously large function, and I'm only part of the way through it. I have, however, finished converting rmap_walk() and friends to take a folio instead of a page. Midway through, there's a short detour to fix up page_vma_mapped_walk to work on an explicit PFN range instead of a page. I had been intending to convert that to use a folio, but with page_mapped_in_vma() really just wanting to know about one page (even if it's a head page) and Muchun wanting to walk pageless memory, making all the users use PFNs just seemed like the right thing to do. The last 9 patches actually start adding large folios to the page cache. This is where I expect the most trouble, but they've been stable in my testing for a while. Matthew Wilcox (Oracle) (74): 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/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 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_is_zone_device() and folio_is_device_private() mm: Add folio_pgoff() mm: Add pvmw_set_page() and pvmw_set_folio() hexagon: 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/rmap: Turn page_referenced() into folio_referenced() mm/mlock: Turn clear_page_mlock() into folio_end_mlock() mm/mlock: Turn mlock_vma_page() into mlock_vma_folio() mm/rmap: Turn page_mlock() into folio_mlock() mm/mlock: Turn munlock_vma_page() into munlock_vma_folio() 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 William Kucharski (1): mm/readahead: Align file mappings for non-DAX Documentation/core-api/pin_user_pages.rst | 18 +- arch/hexagon/include/asm/pgtable.h | 3 +- arch/powerpc/include/asm/mmu_context.h | 1 - include/linux/huge_mm.h | 59 +-- include/linux/hugetlb.h | 5 + include/linux/ksm.h | 6 +- include/linux/mm.h | 145 +++--- include/linux/mm_types.h | 7 +- include/linux/pagemap.h | 32 +- include/linux/rmap.h | 50 ++- include/linux/swap.h | 6 +- include/trace/events/vmscan.h | 10 +- kernel/events/uprobes.c | 2 +- mm/damon/paddr.c | 52 ++- mm/debug.c | 18 +- mm/filemap.c | 59 ++- mm/folio-compat.c | 34 ++ mm/gup.c | 383 +++++++--------- mm/huge_memory.c | 127 +++--- mm/hugetlb.c | 7 +- mm/internal.h | 52 ++- mm/ksm.c | 17 +- mm/memcontrol.c | 22 +- mm/memory-failure.c | 10 +- mm/memory_hotplug.c | 13 +- mm/migrate.c | 90 ++-- mm/mlock.c | 136 +++--- mm/page_alloc.c | 3 +- mm/page_idle.c | 26 +- mm/page_vma_mapped.c | 58 ++- mm/readahead.c | 108 ++++- mm/rmap.c | 416 +++++++++--------- mm/util.c | 36 +- mm/vmscan.c | 280 ++++++------ mm/workingset.c | 25 +- tools/testing/selftests/vm/transhuge-stress.c | 35 +- 36 files changed, 1270 insertions(+), 1081 deletions(-) -- 2.34.1
