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| author | James Morris <james.morris@microsoft.com> | 2018-12-17 11:24:28 -0800 |
|---|---|---|
| committer | James Morris <james.morris@microsoft.com> | 2018-12-17 11:24:28 -0800 |
| commit | 8bd8ea195f6d135a8d85201116314eb5237ad7e7 (patch) | |
| tree | 3ef99e468f0b4b13cc11002aa60c4451e326191b /mm/rmap.c | |
| parent | 1072bd678547f8663cfb81a22fdb50c589e4976e (diff) | |
| parent | 7566ec393f4161572ba6f11ad5171fd5d59b0fbd (diff) | |
Merge tag 'v4.20-rc7' into next-general
Sync with Linux 4.20-rc7, to pick up: Revert "ovl: relax permission checking on underlying layers"
Diffstat (limited to 'mm/rmap.c')
| -rw-r--r-- | mm/rmap.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/mm/rmap.c b/mm/rmap.c index 1e79fac3186b..85b7f9423352 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -1627,16 +1627,9 @@ static bool try_to_unmap_one(struct page *page, struct vm_area_struct *vma, address + PAGE_SIZE); } else { /* - * We should not need to notify here as we reach this - * case only from freeze_page() itself only call from - * split_huge_page_to_list() so everything below must - * be true: - * - page is not anonymous - * - page is locked - * - * So as it is a locked file back page thus it can not - * be remove from the page cache and replace by a new - * page before mmu_notifier_invalidate_range_end so no + * This is a locked file-backed page, thus it cannot + * be removed from the page cache and replaced by a new + * page before mmu_notifier_invalidate_range_end, so no * concurrent thread might update its page table to * point at new page while a device still is using this * page. |