From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx121.postini.com [74.125.245.121]) by kanga.kvack.org (Postfix) with SMTP id 0BFB06B0031 for ; Sun, 28 Jul 2013 10:48:38 -0400 (EDT) Received: by mail-pa0-f48.google.com with SMTP id kp13so3702838pab.35 for ; Sun, 28 Jul 2013 07:48:38 -0700 (PDT) From: SeungHun Lee Subject: [PATCH 2/2] mm: page_alloc: Add unlikely for MAX_ORDER check Date: Sun, 28 Jul 2013 23:48:26 +0900 Message-Id: <1375022906-1164-1-git-send-email-waydi1@gmail.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Cc: SeungHun Lee "order >= MAX_ORDER" case is occur rarely. So I add unlikely for this check. --- mm/page_alloc.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index b8475ed..e644cf5 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2408,7 +2408,7 @@ __alloc_pages_slowpath(gfp_t gfp_mask, unsigned int order, * be using allocators in order of preference for an area that is * too large. */ - if (order >= MAX_ORDER) { + if (unlikely(order >= MAX_ORDER)) { WARN_ON_ONCE(!(gfp_mask & __GFP_NOWARN)); return NULL; } -- 1.7.0.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org