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SubjectRe: [PATCH] hugetlb: remove unnecessary set_page_count in prep_compound_gigantic_page
On Tue, Oct 26, 2021 at 6:06 PM Mike Kravetz <mike.kravetz@oracle.com> wrote:
>
> In commit 7118fc2906e29 ("hugetlb: address ref count racing in
> prep_compound_gigantic_page"), page_ref_freeze is used to atomically
> zero the ref count of tail pages iff they are 1. The unconditional
> call to set_page_count(0) was left in the code. This call is after
> page_ref_freeze so it is really a noop.
>
> Remove redundant and unnecessary set_page_count call.
>
> Fixes: 7118fc2906e29 ("hugetlb: address ref count racing in prep_compound_gigantic_page")
> Suggested-by: Pasha Tatashin <pasha.tatashin@soleen.com>
> Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>

Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>

Thanks,
Pasha

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