Messages in this thread Patch in this message | | | From | Baolin Wang <> | Subject | [PATCH] mm/hugetlb: Remove unnecessary huge_ptep_set_access_flags() in hugetlb_mcopy_atomic_pte() | Date | Wed, 25 May 2022 18:26:24 +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> --- 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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