linux-kernel - Re: [PATCH v2 4/4] selftests/mm: add tests for HWPOISON hugetlbfs read

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Date:   Thu, 6 Jul 2023 16:22:07 -0700
From:   Mike Kravetz <mike.kravetz@...cle.com>
To:     Jiaqi Yan <jiaqiyan@...gle.com>
Cc:     naoya.horiguchi@....com, songmuchun@...edance.com,
        shy828301@...il.com, linmiaohe@...wei.com,
        akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, duenwen@...gle.com,
        axelrasmussen@...gle.com, jthoughton@...gle.com
Subject: Re: [PATCH v2 4/4] selftests/mm: add tests for HWPOISON hugetlbfs
 read

On 06/23/23 16:40, Jiaqi Yan wrote:
> Add tests for the improvement made to read operation on HWPOISON
> hugetlb page with different read granularities. For each chunk size,
> three read scenarios are tested:
> 1. Simple regression test on read without HWPOISON.
> 2. Sequential read page by page should succeed until encounters the 1st
>    raw HWPOISON subpage.
> 3. After skip raw HWPOISON subpage by lseek, read()s always succeed.
> 
> Signed-off-by: Jiaqi Yan <jiaqiyan@...gle.com>
> ---
>  tools/testing/selftests/mm/.gitignore         |   1 +
>  tools/testing/selftests/mm/Makefile           |   1 +
>  .../selftests/mm/hugetlb-read-hwpoison.c      | 322 ++++++++++++++++++
>  3 files changed, 324 insertions(+)
>  create mode 100644 tools/testing/selftests/mm/hugetlb-read-hwpoison.c

Thank you for adding a selftest!

Acked-by: Mike Kravetz <mike.kravetz@...cle.com>

-- 
Mike Kravetz