Messages in this thread | | | Date | Wed, 17 Aug 2022 09:07:22 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] mm/damon: Validate if the pmd entry is present before accessing |
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On Wed, 17 Aug 2022 14:21:12 +0800 Baolin Wang <baolin.wang@linux.alibaba.com> wrote:
> The pmd_huge() is used to validate if the pmd entry is mapped by a huge > page, also including the case of non-present (migration or hwpoisoned) > pmd entry on arm64 or x86 architectures. Thus we should validate if it > is present before making the pmd entry old or getting young state, > otherwise we can not get the correct corresponding page. >
What are the user-visible runtime effects of this change?
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