diff options
Diffstat (limited to 'mm/rmap.c')
| -rw-r--r-- | mm/rmap.c | 40 |
1 files changed, 0 insertions, 40 deletions
diff --git a/mm/rmap.c b/mm/rmap.c index 1355bf686fae..51ec8aa5e61f 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -985,13 +985,6 @@ static int page_vma_mkclean_one(struct page_vma_mapped_walk *pvmw) #endif } - /* - * No need to call mmu_notifier_invalidate_range() as we are - * downgrading page table protection not changing it to point - * to a new page. - * - * See Documentation/mm/mmu_notifier.rst - */ if (ret) cleaned++; } @@ -1549,8 +1542,6 @@ static bool try_to_unmap_one(struct folio *folio, struct vm_area_struct *vma, hugetlb_vma_unlock_write(vma); flush_tlb_range(vma, range.start, range.end); - mmu_notifier_invalidate_range(mm, - range.start, range.end); /* * The ref count of the PMD page was * dropped which is part of the way map @@ -1623,9 +1614,6 @@ static bool try_to_unmap_one(struct folio *folio, struct vm_area_struct *vma, * copied pages. */ dec_mm_counter(mm, mm_counter(&folio->page)); - /* We have to invalidate as we cleared the pte */ - mmu_notifier_invalidate_range(mm, address, - address + PAGE_SIZE); } else if (folio_test_anon(folio)) { swp_entry_t entry = { .val = page_private(subpage) }; pte_t swp_pte; @@ -1637,9 +1625,6 @@ static bool try_to_unmap_one(struct folio *folio, struct vm_area_struct *vma, folio_test_swapcache(folio))) { WARN_ON_ONCE(1); ret = false; - /* We have to invalidate as we cleared the pte */ - mmu_notifier_invalidate_range(mm, address, - address + PAGE_SIZE); page_vma_mapped_walk_done(&pvmw); break; } @@ -1670,9 +1655,6 @@ static bool try_to_unmap_one(struct folio *folio, struct vm_area_struct *vma, */ if (ref_count == 1 + map_count && !folio_test_dirty(folio)) { - /* Invalidate as we cleared the pte */ - mmu_notifier_invalidate_range(mm, - address, address + PAGE_SIZE); dec_mm_counter(mm, MM_ANONPAGES); goto discard; } @@ -1727,9 +1709,6 @@ static bool try_to_unmap_one(struct folio *folio, struct vm_area_struct *vma, if (pte_uffd_wp(pteval)) swp_pte = pte_swp_mkuffd_wp(swp_pte); set_pte_at(mm, address, pvmw.pte, swp_pte); - /* Invalidate as we cleared the pte */ - mmu_notifier_invalidate_range(mm, address, - address + PAGE_SIZE); } else { /* * This is a locked file-backed folio, @@ -1745,13 +1724,6 @@ static bool try_to_unmap_one(struct folio *folio, struct vm_area_struct *vma, dec_mm_counter(mm, mm_counter_file(&folio->page)); } discard: - /* - * No need to call mmu_notifier_invalidate_range() it has be - * done above for all cases requiring it to happen under page - * table lock before mmu_notifier_invalidate_range_end() - * - * See Documentation/mm/mmu_notifier.rst - */ page_remove_rmap(subpage, vma, folio_test_hugetlb(folio)); if (vma->vm_flags & VM_LOCKED) mlock_drain_local(); @@ -1930,8 +1902,6 @@ static bool try_to_migrate_one(struct folio *folio, struct vm_area_struct *vma, hugetlb_vma_unlock_write(vma); flush_tlb_range(vma, range.start, range.end); - mmu_notifier_invalidate_range(mm, - range.start, range.end); /* * The ref count of the PMD page was @@ -2036,9 +2006,6 @@ static bool try_to_migrate_one(struct folio *folio, struct vm_area_struct *vma, * copied pages. */ dec_mm_counter(mm, mm_counter(&folio->page)); - /* We have to invalidate as we cleared the pte */ - mmu_notifier_invalidate_range(mm, address, - address + PAGE_SIZE); } else { swp_entry_t entry; pte_t swp_pte; @@ -2102,13 +2069,6 @@ static bool try_to_migrate_one(struct folio *folio, struct vm_area_struct *vma, */ } - /* - * No need to call mmu_notifier_invalidate_range() it has be - * done above for all cases requiring it to happen under page - * table lock before mmu_notifier_invalidate_range_end() - * - * See Documentation/mm/mmu_notifier.rst - */ page_remove_rmap(subpage, vma, folio_test_hugetlb(folio)); if (vma->vm_flags & VM_LOCKED) mlock_drain_local(); |