Messages in this thread Patch in this message | | | From | Baolin Wang <> | Subject | [PATCH v2] mm/hugetlb: Remove unnecessary huge_ptep_set_access_flags() in hugetlb_mcopy_atomic_pte() | Date | Fri, 27 May 2022 10:01:35 +0800 |
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There is no need to update the hugetlb access flags after just setting the hugetlb page table entry by set_huge_pte_at(), since the page table entry value has no changes.
Thus remove the unnecessary huge_ptep_set_access_flags() in hugetlb_mcopy_atomic_pte().
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Muchun Song <songmuchun@bytedance.com> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> --- Changes from v1: - Update commit message to remove checkpatch.pl complaint. - Collect reviewed-by tags. --- mm/hugetlb.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 7c468ac..3ad49bf 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -6032,8 +6032,6 @@ int hugetlb_mcopy_atomic_pte(struct mm_struct *dst_mm, set_huge_pte_at(dst_mm, dst_addr, dst_pte, _dst_pte); - (void)huge_ptep_set_access_flags(dst_vma, dst_addr, dst_pte, _dst_pte, - dst_vma->vm_flags & VM_WRITE); hugetlb_count_add(pages_per_huge_page(h), dst_mm); /* No need to invalidate - it was non-present before */ -- 1.8.3.1
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