diff --git a/mm/internal.h b/mm/internal.h
index 8450562744cf..222e63b2dea4 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -616,7 +616,7 @@ folio_within_range(struct folio *folio, struct vm_area_struct *vma,
 		unsigned long start, unsigned long end)
 {
 	pgoff_t pgoff, addr;
-	unsigned long vma_pglen = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+	unsigned long vma_pglen = vma_pages(vma);
 
 	VM_WARN_ON_FOLIO(folio_test_ksm(folio), folio);
 	if (start > end)