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-rw-r--r--include/linux/mm.h2
-rw-r--r--mm/memory.c10
2 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 126b54b45442..52c40b3d0813 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_folio_pmd(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 d956b231e835..311e862c6404 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_folio_pmd(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,