From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sun, 11 Dec 2005 20:48:40 +0100 From: Andi Kleen Subject: Re: [RFC 3/6] Make nr_pagecache a per zone counter Message-ID: <20051211194840.GU11190@wotan.suse.de> References: <20051210005440.3887.34478.sendpatchset@schroedinger.engr.sgi.com> <20051210005456.3887.94412.sendpatchset@schroedinger.engr.sgi.com> <20051211183241.GD4267@dmt.cnet> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20051211183241.GD4267@dmt.cnet> Sender: owner-linux-mm@kvack.org Return-Path: To: Marcelo Tosatti Cc: Christoph Lameter , linux-kernel@vger.kernel.org, Hugh Dickins , Nick Piggin , linux-mm@kvack.org, Andi Kleen List-ID: > By the way, why does nr_pagecache needs to be an atomic variable on UP systems? At least on X86 UP atomic doesn't use the LOCK prefix and is thus quite cheap. I would expect other architectures who care about UP performance (= not IA64) to be similar. -Andi -- 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