mm: hugetlb_vmemmap: add missing smp_wmb() before set_pte_at()

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The memory barrier smp_wmb() is needed to make sure that preceding stores
to the page contents become visible before the below set_pte_at() write.

Link: https://lkml.kernel.org/r/20220816130553.31406-5-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Yin Fengwei <fengwei.yin@intel.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

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Miaohe Lin 2022-08-16 21:05:51 +08:00 • committed by Andrew Morton

parent 3a5497a2da

commit 939de63d35

1 changed files with 5 additions and 0 deletions

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mm/hugetlb_vmemmap.c

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