From 5fa5b16be5b319184378870467352eab6700b1de Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Date: Mon, 4 Dec 2017 07:49:10 +0530 Subject: [PATCH] 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 <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> --- arch/powerpc/mm/hugetlbpage.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index a9b9083c5e499..c7e5afe5e118e 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" */ -- 2.30.2