hugetlb: add comment for subtle SetHPageVmemmapOptimized()

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The SetHPageVmemmapOptimized() called here seems unnecessary as it's
assumed to be set when calling this function. But it's indeed cleared
by above set_page_private(page, 0). Add a comment to avoid possible
future confusion.

Link: https://lkml.kernel.org/r/20220901120030.63318-9-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

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Miaohe Lin 2022-09-01 20:00:28 +08:00 • committed by Andrew Morton

parent 29be84265f

commit a9e1eab241

1 changed files with 4 additions and 0 deletions

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mm/hugetlb.c

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