Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261399AbVBAStY (ORCPT ); Tue, 1 Feb 2005 13:49:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261409AbVBAStY (ORCPT ); Tue, 1 Feb 2005 13:49:24 -0500 Received: from omx3-ext.sgi.com ([192.48.171.20]:49028 "EHLO omx3.sgi.com") by vger.kernel.org with ESMTP id S261399AbVBASs0 (ORCPT ); Tue, 1 Feb 2005 13:48:26 -0500 Date: Tue, 1 Feb 2005 10:47:30 -0800 (PST) From: Christoph Lameter X-X-Sender: clameter@schroedinger.engr.sgi.com To: Nick Piggin cc: Andi Kleen , Andrew Morton , torvalds@osdl.org, hugh@veritas.com, linux-mm@kvack.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, benh@kernel.crashing.org Subject: Re: page fault scalability patch V16 [3/4]: Drop page_table_lock in handle_mm_fault In-Reply-To: <41FF00CE.8060904@yahoo.com.au> Message-ID: References: <41E5B7AD.40304@yahoo.com.au> <41E5BC60.3090309@yahoo.com.au> <20050113031807.GA97340@muc.de> <20050113180205.GA17600@muc.de> <20050114043944.GB41559@muc.de> <20050114170140.GB4634@muc.de> <41FF00CE.8060904@yahoo.com.au> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 734 Lines: 15 On Tue, 1 Feb 2005, Nick Piggin wrote: > Slightly OT: are you still planning to move the update_mem_hiwater and > friends crud out of these fastpaths? It looks like at least that function > is unsafe to be lockless. Yes. I have a patch pending and the author of the CSA patches is a cowoerker of mine. The patch will be resubmitted once certain aspects of the timer subsystem are stabilized and/or when he gets back from his vacation. The statistics are not critical to system operation. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/