From: Jinjiang Tu <tujinjiang@huawei.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: <andrii@kernel.org>, <avagin@gmail.com>,
<baolin.wang@linux.alibaba.com>, <brahmajit.xyz@gmail.com>,
<catalin.marinas@arm.com>, <christophe.leroy@csgroup.eu>,
<david@redhat.com>, <dev.jain@arm.com>, <hughd@google.com>,
<joern@logfs.org>, <linux-mm@kvack.org>,
<lorenzo.stoakes@oracle.com>, <mhocko@suse.com>,
<rientjes@google.com>, <ryan.roberts@arm.com>,
<superman.xpt@gmail.com>, <thiago.bauermann@linaro.org>,
<wangkefeng.wang@huawei.com>
Subject: Re: [PATCH] mm/memory-failure: hold PTL in hwpoison_hugetlb_range
Date: Sat, 26 Jul 2025 08:28:08 +0800 [thread overview]
Message-ID: <a0c990be-f56a-4c40-8fdf-acc7252be015@huawei.com> (raw)
In-Reply-To: <20250725162913.5ab54fa56b8b67c749cff948@linux-foundation.org>
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在 2025/7/26 7:29, Andrew Morton 写道:
> On Fri, 25 Jul 2025 11:31:12 +0800 Jinjiang Tu<tujinjiang@huawei.com> wrote:
>
>> Hold PTL in hwpoison_hugetlb_range() to avoid operating on stale page, as
>> hwpoison_pte_range() have done.
> Does this fix any known runtime issues? Or is it expected to?
It doesn't. There is no known issues, PTL is expected to hold like PTE handling to avoid poissible issues.
So, there is no need to backport it.
>
> In other words, do we have reason to backport this fix into earlier
> kernels?
>
>
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prev parent reply other threads:[~2025-07-26 0:28 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-24 9:09 [PATCH v2 0/3] hold PTL for several .hugetlb_entry callbacks Jinjiang Tu
2025-07-24 9:09 ` [PATCH v2 1/3] mm/smaps: fix race between smaps_hugetlb_range and migration Jinjiang Tu
2025-07-24 16:27 ` David Hildenbrand
2025-07-24 9:09 ` [PATCH v2 2/3] fs/proc/task_mmu: hold PTL in pagemap_hugetlb_range and gather_hugetlb_stats Jinjiang Tu
2025-07-24 16:27 ` David Hildenbrand
2025-07-24 9:09 ` [PATCH v2 3/3] mm/mincore: hold PTL in mincore_hugetlb Jinjiang Tu
2025-07-24 16:29 ` David Hildenbrand
2025-07-24 16:26 ` [PATCH v2 0/3] hold PTL for several .hugetlb_entry callbacks David Hildenbrand
2025-07-25 2:02 ` Jinjiang Tu
2025-07-25 3:31 ` [PATCH] mm/memory-failure: hold PTL in hwpoison_hugetlb_range Jinjiang Tu
2025-07-25 15:48 ` David Hildenbrand
2025-07-25 23:29 ` Andrew Morton
2025-07-26 0:28 ` Jinjiang Tu [this message]
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