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From:   Naoya Horiguchi <naoya.horiguchi@linux.dev>
To:     stable@vger.kernel.org
Cc:     Yang Shi <shy828301@gmail.com>,
        James Houghton <jthoughton@google.com>,
        Mike Kravetz <mike.kravetz@oracle.com>,
        Muchun Song <songmuchun@bytedance.com>,
        Miaohe Lin <linmiaohe@huawei.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Naoya Horiguchi <naoya.horiguchi@nec.com>
Subject: hwpoison, shmem: fix data lost issue for 5.15.y
Message-ID: <20221114131403.GA3807058@u2004>
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Hi,

I'd like to request the follow commits to be backported to 5.15.y.

- dd0f230a0a80 ("mm: hwpoison: refactor refcount check handling")
- 4966455d9100 ("mm: hwpoison: handle non-anonymous THP correctly")
- a76054266661 ("mm: shmem: don't truncate page if memory failure happens")

These patches fixed a data lost issue by preventing shmem pagecache from
being removed by memory error.  These were not tagged for stable originally,
but that's revisited recently.

Thanks,
Naoya Horiguchi