v2 mm: backport fork/unmap/zap optimize · Pull Request !5651 · openEuler/kernel

PR sync from: Kefeng Wang <wangkefeng.wang@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/XR2MZZ4OEDXF72JOWEZSFLWPV3JGDABG/ 
This is to optimize fork/unmap/zap() with PTE-mapped THP.

Catalin Marinas (1):
  arm64: Mark the 'addr' argument to set_ptes() and __set_pte_at() as
    unused

David Hildenbrand (24):
  arm/pgtable: define PFN_PTE_SHIFT
  nios2/pgtable: define PFN_PTE_SHIFT
  powerpc/pgtable: define PFN_PTE_SHIFT
  riscv/pgtable: define PFN_PTE_SHIFT
  s390/pgtable: define PFN_PTE_SHIFT
  sparc/pgtable: define PFN_PTE_SHIFT
  mm/pgtable: make pte_next_pfn() independent of set_ptes()
  arm/mm: use pte_next_pfn() in set_ptes()
  powerpc/mm: use pte_next_pfn() in set_ptes()
  mm/memory: factor out copying the actual PTE in copy_present_pte()
  mm/memory: pass PTE to copy_present_pte()
  mm/memory: optimize fork() with PTE-mapped THP
  mm/memory: ignore dirty/accessed/soft-dirty bits in folio_pte_batch()
  mm/memory: ignore writable bit in folio_pte_batch()
  mm/memory: factor out zapping of present pte into zap_present_pte()
  mm/memory: handle !page case in zap_present_pte() separately
  mm/memory: further separate anon and pagecache folio handling in
    zap_present_pte()
  mm/memory: factor out zapping folio pte into zap_present_folio_pte()
  mm/mmu_gather: pass "delay_rmap" instead of encoded page to
    __tlb_remove_page_size()
  mm/mmu_gather: define ENCODED_PAGE_FLAG_DELAY_RMAP
  mm/mmu_gather: add tlb_remove_tlb_entries()
  mm/mmu_gather: add __tlb_remove_folio_pages()
  mm/mmu_gather: improve cond_resched() handling with large folios and
    expensive page freeing
  mm/memory: optimize unmap/zap with PTE-mapped THP

Kefeng Wang (7):
  s390: use pfn_swap_entry_folio() in ptep_zap_swap_entry()
  mm: use pfn_swap_entry_folio() in __split_huge_pmd_locked()
  mm: use pfn_swap_entry_to_folio() in zap_huge_pmd()
  mm: use pfn_swap_entry_folio() in copy_nonpresent_pte()
  mm: convert to should_zap_page() to should_zap_folio()
  mm: convert mm_counter() to take a folio
  mm: convert mm_counter_file() to take a folio

Matthew Wilcox (Oracle) (2):
  mm: add pfn_swap_entry_folio()
  mprotect: use pfn_swap_entry_folio

Ryan Roberts (2):
  arm64/mm: Hoist synchronization out of set_ptes() loop
  arm64/mm: make set_ptes() robust when OAs cross 48-bit boundary

-- 
2.27.0
 
https://gitee.com/openeuler/kernel/issues/I9CHB4

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