From: Aneesh Kumar K.V Date: Mon, 4 Dec 2017 02:19:10 +0000 (+0530) Subject: powerpc/mm/hugetlb: Use pte_access_permitted for hugetlb access check X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=5fa5b16be5b319184378870467352eab6700b1de;p=openwrt%2Fstaging%2Fblogic.git powerpc/mm/hugetlb: Use pte_access_permitted for hugetlb access check No functional change in this patch. This update gup_hugepte to use the helper. This will help later when we add memory keys. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman --- diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index a9b9083c5e49..c7e5afe5e118 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -855,9 +855,7 @@ int gup_hugepte(pte_t *ptep, unsigned long sz, unsigned long addr, pte = READ_ONCE(*ptep); - if (!pte_present(pte) || !pte_read(pte)) - return 0; - if (write && !pte_write(pte)) + if (!pte_access_permitted(pte, write)) return 0; /* hugepages are never "special" */