diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 88eb59d..6965be0 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1611,8 +1611,9 @@
 	 * Don't let big-order allocations loop unless the caller explicitly
 	 * requests that.  Wait for some write requests to complete then retry.
 	 *
-	 * In this implementation, __GFP_REPEAT means __GFP_NOFAIL for order
-	 * <= 3, but that may not be true in other implementations.
+	 * In this implementation, either order <= PAGE_ALLOC_COSTLY_ORDER or
+	 * __GFP_REPEAT mean __GFP_NOFAIL, but that may not be true in other
+	 * implementations.
 	 */
 	do_retry = 0;
 	if (!(gfp_mask & __GFP_NORETRY)) {