From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934188AbXGKWh3 (ORCPT ); Wed, 11 Jul 2007 18:37:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757079AbXGKWhU (ORCPT ); Wed, 11 Jul 2007 18:37:20 -0400 Received: from wa-out-1112.google.com ([209.85.146.179]:63702 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754667AbXGKWhS (ORCPT ); Wed, 11 Jul 2007 18:37:18 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=ESgPZLMyHayP0Ufv+Bp5XsLgHOzQwG9472QIWhMuGiMvciFUbr7FyfOUz2xo70myARkR6xpSCdpJSOj8BFPSlnCf6qUpN8t6cpPzvjdOUQZrInr42/mP0NQyDFTZuRrSer0ysgw77tRDsr9BKKsr5aKxAUs65LK8zgPKGHwizxw= Message-ID: Date: Wed, 11 Jul 2007 15:37:17 -0700 From: "Tim Pepper" To: "Peter Zijlstra" Subject: Re: [RFT][PATCH] mm: drop behind Cc: linux-kernel , linux-mm , "Fengguang Wu" , riel , "Andrew Morton" , "Rusty Russell" In-Reply-To: <1184007008.1913.45.camel@twins> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <1184007008.1913.45.camel@twins> X-Google-Sender-Auth: f6ff9d574333139d Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 7/9/07, Peter Zijlstra wrote: > Use the read-ahead code to provide hints to page reclaim. > > This patch has the potential to solve the streaming-IO trashes my > desktop problem. > > It tries to aggressively reclaim pages that were loaded in a strong > sequential pattern and have been consumed. Thereby limiting the damage > to the current resident set. Interesting... Would it make sense to tie this into (finally) making POSIX_FADV_NOREUSE something more than a noop? Tim