diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 9dd443d89d8be665813bbeb4e17e54fafde46428..e51802d7c8ffad1c562ffa8b27a5d49d18f1d92e 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -333,8 +333,8 @@ static void bad_page(struct page *page)
  *
  * The remaining PAGE_SIZE pages are called "tail pages".
  *
- * All pages have PG_compound set.  All pages have their ->private pointing at
- * the head page (even the head page has this).
+ * All pages have PG_compound set.  All tail pages have their ->first_page
+ * pointing at the head page.
  *
  * The first tail page's ->lru.next holds the address of the compound page's
  * put_page() function.  Its ->lru.prev holds the order of allocation.