This allows us to make huge PTEs at shifts other than the hstate shift,
which will be necessary for high-granularity mappings.
Acked-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Signed-off-by: James Houghton <jthoughton@xxxxxxxxxx>
---
mm/hugetlb.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index aa8e59cbca69..3a75833d7aba 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -5028,11 +5028,11 @@ const struct vm_operations_struct hugetlb_vm_ops = {
.pagesize = hugetlb_vm_op_pagesize,
};
-static pte_t make_huge_pte(struct vm_area_struct *vma, struct page *page,
- int writable)
+static pte_t make_huge_pte_with_shift(struct vm_area_struct *vma,
+ struct page *page, int writable,
+ int shift)
{
pte_t entry;
- unsigned int shift = huge_page_shift(hstate_vma(vma));
if (writable) {
entry = huge_pte_mkwrite(huge_pte_mkdirty(mk_pte(page,
@@ -5046,6 +5046,14 @@ static pte_t make_huge_pte(struct vm_area_struct *vma, struct page *page,
return entry;
}
+static pte_t make_huge_pte(struct vm_area_struct *vma, struct page *page,
+ int writable)
+{
+ unsigned int shift = huge_page_shift(hstate_vma(vma));
+
+ return make_huge_pte_with_shift(vma, page, writable, shift);
+}
+
static void set_huge_ptep_writable(struct vm_area_struct *vma,
unsigned long address, pte_t *ptep)
{
--
2.39.0.314.g84b9a713c41-goog
