diff --git a/mm/page_vma_mapped.c b/mm/page_vma_mapped.c
index 956015614395323cd827a758dffd55dc4a2343aa..ae3c2a35d61b7cae4fbecea4421bbd0450b81c53 100644
--- a/mm/page_vma_mapped.c
+++ b/mm/page_vma_mapped.c
@@ -30,6 +30,14 @@ static bool map_pte(struct page_vma_mapped_walk *pvmw)
 	return true;
 }
 
+static inline bool pfn_in_hpage(struct page *hpage, unsigned long pfn)
+{
+	unsigned long hpage_pfn = page_to_pfn(hpage);
+
+	/* THP can be referenced by any subpage */
+	return pfn >= hpage_pfn && pfn - hpage_pfn < hpage_nr_pages(hpage);
+}
+
 /**
  * check_pte - check if @pvmw->page is mapped at the @pvmw->pte
  *
@@ -78,14 +86,7 @@ static bool check_pte(struct page_vma_mapped_walk *pvmw)
 		pfn = pte_pfn(*pvmw->pte);
 	}
 
-	if (pfn < page_to_pfn(pvmw->page))
-		return false;
-
-	/* THP can be referenced by any subpage */
-	if (pfn - page_to_pfn(pvmw->page) >= hpage_nr_pages(pvmw->page))
-		return false;
-
-	return true;
+	return pfn_in_hpage(pvmw->page, pfn);
 }
 
 /**