The new vm_normal_pmd_folio() wrapper is similar to vm_normal_folio(),
which allow them to completely replace the struct page variables with
struct folio variables.
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
---
include/linux/mm.h | 2 ++
mm/memory.c | 10 ++++++++++
2 files changed, 12 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 12335de50140..7d05ec047186 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2327,6 +2327,8 @@ struct folio *vm_normal_folio(struct vm_area_struct *vma, unsigned long addr,
pte_t pte);
struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr,
pte_t pte);
+struct folio *vm_normal_pmd_folio(struct vm_area_struct *vma, unsigned long addr,
+ pmd_t pmd);
struct page *vm_normal_page_pmd(struct vm_area_struct *vma, unsigned long addr,
pmd_t pmd);
diff --git a/mm/memory.c b/mm/memory.c
index ce3efe7255d2..d4296ee72730 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -689,6 +689,16 @@ struct page *vm_normal_page_pmd(struct vm_area_struct *vma, unsigned long addr,
out:
return pfn_to_page(pfn);
}
+
+struct folio *vm_normal_pmd_folio(struct vm_area_struct *vma, unsigned long addr,
+ pmd_t pmd)
+{
+ struct page *page = vm_normal_page_pmd(vma, addr, pmd);
+
+ if (page)
+ return page_folio(page);
+ return NULL;
+}
#endif
static void restore_exclusive_pte(struct vm_area_struct *vma,
--
2.27.0
