From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with ESMTP id 7EC9160021B for ; Mon, 28 Dec 2009 06:06:41 -0500 (EST) Subject: Re: [RFC PATCH] asynchronous page fault. From: Peter Zijlstra In-Reply-To: <50863609fb8263f3a0f9111a304a9dbc.squirrel@webmail-b.css.fujitsu.com> References: <20091225105140.263180e8.kamezawa.hiroyu@jp.fujitsu.com> <1261915391.15854.31.camel@laptop> <20091228093606.9f2e666c.kamezawa.hiroyu@jp.fujitsu.com> <1261989047.7135.3.camel@laptop> <27db4d47e5a95e7a85942c0278892467.squirrel@webmail-b.css.fujitsu.com> <1261996258.7135.67.camel@laptop> <50863609fb8263f3a0f9111a304a9dbc.squirrel@webmail-b.css.fujitsu.com> Content-Type: text/plain; charset="UTF-8" Date: Mon, 28 Dec 2009 12:06:01 +0100 Message-ID: <1261998361.7135.78.camel@laptop> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: KAMEZAWA Hiroyuki Cc: "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "minchan.kim@gmail.com" , cl@linux-foundation.org List-ID: On Mon, 2009-12-28 at 19:57 +0900, KAMEZAWA Hiroyuki wrote: > - because pmd has some trobles because of quicklists..I don't wanted to > touch free routine of them. I really doubt the value of that quicklist horror. IIRC x86 stopped supporting that a while ago as well. I would suspect the page-table retention scheme possible with RCU freed page tables could be far more efficient than quicklists, but then that's all speculation since I don't know what kind of workloads we're talking about and this glaring lack of implementation to compare. -- 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