linux-kernel - [PATCH v3 0/4] mm, hwpoison: improve handling workload related to hugetlb and memory

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Message-Id: <20220921091359.25889-1-naoya.horiguchi@linux.dev>
Date:   Wed, 21 Sep 2022 18:13:55 +0900
From:   Naoya Horiguchi <naoya.horiguchi@...ux.dev>
To:     linux-mm@...ck.org
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Miaohe Lin <linmiaohe@...wei.com>,
        David Hildenbrand <david@...hat.com>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Yang Shi <shy828301@...il.com>,
        Oscar Salvador <osalvador@...e.de>,
        Muchun Song <songmuchun@...edance.com>,
        Jane Chu <jane.chu@...cle.com>,
        Naoya Horiguchi <naoya.horiguchi@....com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v3 0/4] mm, hwpoison: improve handling workload related to hugetlb and memory_hotplug

Hi,

This patchset tries to solve the issue among memory_hotplug, hugetlb and
hwpoison.  Based on the review over v2 by Miaohe (thank you!), 1/4 takes
another approach to prevent hwpoisoned hugepages to be migrated (i.e.
the corrupted data is accessed) in memory hotremove.

In this patchset, memory hotplug handles hwpoison pages like below:

  - hwpoison pages should not prevent memory hotremove,
  - memory block with hwpoison pages should not be onlined.

Any comments and feedbacks would be appreciated.

Thanks,
Naoya Horiguchi

v1: https://lore.kernel.org/linux-mm/20220427042841.678351-1-naoya.horiguchi@linux.dev/T
v2: https://lore.kernel.org/linux-mm/20220905062137.1455537-1-naoya.horiguchi@linux.dev/T
---
Summary:

Naoya Horiguchi (4):
      mm,hwpoison,hugetlb,memory_hotplug: hotremove memory section with hwpoisoned hugepage
      mm/hwpoison: move definitions of num_poisoned_pages_* to memory-failure.c
      mm/hwpoison: pass pfn to num_poisoned_pages_*()
      mm/hwpoison: introduce per-memory_block hwpoison counter

 arch/parisc/kernel/pdt.c |  5 ++--
 drivers/base/memory.c    | 36 +++++++++++++++++++++++++++++
 include/linux/hugetlb.h  |  4 ++--
 include/linux/memory.h   |  3 +++
 include/linux/mm.h       | 13 +++++++++++
 include/linux/swapops.h  | 24 ++------------------
 mm/hugetlb.c             |  4 ++--
 mm/internal.h            |  8 -------
 mm/memory-failure.c      | 59 +++++++++++++++++++++++++++---------------------
 mm/sparse.c              |  2 --
 10 files changed, 93 insertions(+), 65 deletions(-)