mm/rmap.c: don't call mmu_notifier_invalidate_page() during munlock
In its munmap mode, try_to_unmap_one() searches other mlocked vmas, it never unmaps pages. There is no reason for invalidation because ptes are left unchanged. Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -1252,7 +1252,7 @@ static int try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
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out_unmap:
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pte_unmap_unlock(pte, ptl);
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if (ret != SWAP_FAIL)
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if (ret != SWAP_FAIL && TTU_ACTION(flags) != TTU_MUNLOCK)
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mmu_notifier_invalidate_page(mm, address);
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out:
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return ret;
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