1 files changed, 19 insertions, 0 deletions

diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index ebf3750e42b2..77d1ba57d495 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -216,6 +216,25 @@ static inline pte_t *page_check_address(struct page *page, struct mm_struct *mm,
 }
 
 /*
+ * Used by idle page tracking to check if a page was referenced via page
+ * tables.
+ */
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+bool page_check_address_transhuge(struct page *page, struct mm_struct *mm,
+                                  unsigned long address, pmd_t **pmdp,
+                                  pte_t **ptep, spinlock_t **ptlp);
+#else
+static inline bool page_check_address_transhuge(struct page *page,
+                                struct mm_struct *mm, unsigned long address,
+                                pmd_t **pmdp, pte_t **ptep, spinlock_t **ptlp)
+{
+        *ptep = page_check_address(page, mm, address, ptlp, 0);
+        *pmdp = NULL;
+        return !!*ptep;
+}
+#endif
+
+/*
  * Used by swapoff to help locate where page is expected in vma.
  */
 unsigned long page_address_in_vma(struct page *, struct vm_area_struct *);