From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail191.messagelabs.com (mail191.messagelabs.com [216.82.242.19]) by kanga.kvack.org (Postfix) with SMTP id 144076B01FC for ; Tue, 13 Apr 2010 20:22:25 -0400 (EDT) Received: from m4.gw.fujitsu.co.jp ([10.0.50.74]) by fgwmail5.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id o3E0MMWu006292 for (envelope-from kamezawa.hiroyu@jp.fujitsu.com); Wed, 14 Apr 2010 09:22:22 +0900 Received: from smail (m4 [127.0.0.1]) by outgoing.m4.gw.fujitsu.co.jp (Postfix) with ESMTP id 446E145DE6E for ; Wed, 14 Apr 2010 09:22:22 +0900 (JST) Received: from s4.gw.fujitsu.co.jp (s4.gw.fujitsu.co.jp [10.0.50.94]) by m4.gw.fujitsu.co.jp (Postfix) with ESMTP id 22FDC45DE60 for ; Wed, 14 Apr 2010 09:22:22 +0900 (JST) Received: from s4.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s4.gw.fujitsu.co.jp (Postfix) with ESMTP id 0095B1DB8041 for ; Wed, 14 Apr 2010 09:22:22 +0900 (JST) Received: from ml14.s.css.fujitsu.com (ml14.s.css.fujitsu.com [10.249.87.104]) by s4.gw.fujitsu.co.jp (Postfix) with ESMTP id 936731DB8042 for ; Wed, 14 Apr 2010 09:22:21 +0900 (JST) Date: Wed, 14 Apr 2010 09:18:25 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [PATCH 3/6] change alloc function in alloc_slab_page Message-Id: <20100414091825.0bacfe48.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <8b348d9cc1ea4960488b193b7e8378876918c0d4.1271171877.git.minchan.kim@gmail.com> References: <9918f566ab0259356cded31fd1dd80da6cae0c2b.1271171877.git.minchan.kim@gmail.com> <8b348d9cc1ea4960488b193b7e8378876918c0d4.1271171877.git.minchan.kim@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Minchan Kim Cc: Andrew Morton , Mel Gorman , Bob Liu , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Christoph Lameter List-ID: On Wed, 14 Apr 2010 00:25:00 +0900 Minchan Kim wrote: > alloc_slab_page never calls alloc_pages_node with -1. > It means node's validity check is unnecessary. > So we can use alloc_pages_exact_node instead of alloc_pages_node. > It could avoid comparison and branch as 6484eb3e2a81807722 tried. > > Cc: Christoph Lameter > Signed-off-by: Minchan Kim Reviewed-by: KAMEZAWA Hiroyuki -- 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