linux-kernel - [PATCH v2 0/4] mm, hwpoison: improve handling workload related to hugetlb and memory

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Date:   Mon,  5 Sep 2022 15:21:33 +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 v2 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 discussion on v1, this version goes in the
direction of changing the behavior of memory hotplug for hwpoison:

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

I tested both with ACPI-based and sysfs-based memory hotplug, and passed
basic testcases.

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
---
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/memory.h   |  3 +++
 include/linux/mm.h       | 12 ++++++++++++
 include/linux/swapops.h  | 25 -------------------------
 mm/internal.h            |  8 --------
 mm/memory-failure.c      | 45 +++++++++++++++++++++++----------------------
 mm/memory_hotplug.c      | 22 +++++++++++-----------
 mm/sparse.c              |  2 --
 9 files changed, 87 insertions(+), 71 deletions(-)