From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx105.postini.com [74.125.245.105]) by kanga.kvack.org (Postfix) with SMTP id 7422A6B0096 for ; Sun, 11 Dec 2011 19:50:43 -0500 (EST) Received: from m4.gw.fujitsu.co.jp (unknown [10.0.50.74]) by fgwmail5.fujitsu.co.jp (Postfix) with ESMTP id 239593EE0BC for ; Mon, 12 Dec 2011 09:50:42 +0900 (JST) Received: from smail (m4 [127.0.0.1]) by outgoing.m4.gw.fujitsu.co.jp (Postfix) with ESMTP id 0896345DE51 for ; Mon, 12 Dec 2011 09:50:42 +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 E3CA245DE4D for ; Mon, 12 Dec 2011 09:50:41 +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 D4E621DB803B for ; Mon, 12 Dec 2011 09:50:41 +0900 (JST) Received: from ml14.s.css.fujitsu.com (ml14.s.css.fujitsu.com [10.240.81.134]) by s4.gw.fujitsu.co.jp (Postfix) with ESMTP id 884FC1DB802F for ; Mon, 12 Dec 2011 09:50:41 +0900 (JST) Date: Mon, 12 Dec 2011 09:49:30 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [PATCH v3] mm: simplify find_vma_prev Message-Id: <20111212094930.9d4716e1.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <1323470921-12931-1-git-send-email-kosaki.motohiro@gmail.com> References: <1323466526.27746.29.camel@joe2Laptop> <1323470921-12931-1-git-send-email-kosaki.motohiro@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: kosaki.motohiro@gmail.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, KOSAKI Motohiro , "Andrew Morton (commit_signer:15/23=65%)" , "Hugh Dickins (commit_signer:7/23=30%)" , "Peter Zijlstra (commit_signer:4/23=17%)" , "Shaohua Li (commit_signer:3/23=13%)" On Fri, 9 Dec 2011 17:48:40 -0500 kosaki.motohiro@gmail.com wrote: > From: KOSAKI Motohiro > > commit 297c5eee37 (mm: make the vma list be doubly linked) added > vm_prev member into vm_area_struct. Therefore we can simplify > find_vma_prev() by using it. Also, this change help to improve > page fault performance because it has strong locality of reference. > > Signed-off-by: KOSAKI Motohiro 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org