diff options
author | Naoya Horiguchi <naoya.horiguchi@nec.com> | 2022-06-02 14:06:28 +0900 |
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committer | Liam R. Howlett <Liam.Howlett@oracle.com> | 2022-07-19 20:15:03 -0400 |
commit | c728e549df5f89b5ce6fea7ccd5972f71a0d1a8c (patch) | |
tree | 4d2324d5c122dd619f8d19979195be77bb84abab /include/linux/cpumask.h | |
parent | be919200722d2bd5ef63a94d7f2863119e7cf8d1 (diff) |
mm,hwpoison: set PG_hwpoison for busy hugetlb pages
If memory_failure() fails to grab page refcount on a hugetlb page because
it's busy, it returns without setting PG_hwpoison on it. This not only
loses a chance of error containment, but breaks the rule that
action_result() should be called only when memory_failure() do any of
handling work (even if that's just setting PG_hwpoison). This
inconsistency could harm code maintainability.
So set PG_hwpoison and call hugetlb_set_page_hwpoison() for such a case.
Link: https://lkml.kernel.org/r/20220602050631.771414-3-naoya.horiguchi@linux.dev
Fixes: 405ce051236c ("mm/hwpoison: fix race between hugetlb free/demotion and memory_failure_hugetlb()")
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Liu Shixin <liushixin2@huawei.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Yang Shi <shy828301@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/cpumask.h')
0 files changed, 0 insertions, 0 deletions