On 11/29/18 3:40 AM, Andrew Morton wrote:
On Wed, 28 Nov 2018 20:04:37 +0530 "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxx> wrote:
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxx>
Some explanation of the motivation would be useful.
I will update the commit message.
include/linux/hugetlb.h | 18 ++++++++++++++++++
mm/hugetlb.c | 8 +++++---
2 files changed, 23 insertions(+), 3 deletions(-)
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 087fd5f48c91..e2a3b0c854eb 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -543,6 +543,24 @@ static inline void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr
set_huge_pte_at(mm, addr, ptep, pte);
}
#endif
+
+#ifndef huge_ptep_modify_prot_start
+static inline pte_t huge_ptep_modify_prot_start(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep)
+{
+ return huge_ptep_get_and_clear(vma->vm_mm, addr, ptep);
+}
+#endif
#define huge_ptep_modify_prot_start huge_ptep_modify_prot_start
+#ifndef huge_ptep_modify_prot_commit
+static inline void huge_ptep_modify_prot_commit(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep,
+ pte_t old_pte, pte_t pte)
+{
+ set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
+}
+#endif
#define huge_ptep_modify_prot_commit huge_ptep_modify_prot_commit
Will update.
-aneesh
