From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756258AbYDZOFx (ORCPT ); Sat, 26 Apr 2008 10:05:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751359AbYDZOFr (ORCPT ); Sat, 26 Apr 2008 10:05:47 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:56717 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751230AbYDZOFq (ORCPT ); Sat, 26 Apr 2008 10:05:46 -0400 Subject: Re: Announce: Semaphore-Removal tree From: Peter Zijlstra To: Christoph Hellwig Cc: Daniel Walker , Matthew Wilcox , linux-kernel@vger.kernel.org, Stephen Rothwell In-Reply-To: <20080426134430.GA28205@infradead.org> References: <20080425170021.GH14990@parisc-linux.org> <1209155917.12461.46.camel@localhost.localdomain> <20080425211250.GA13858@infradead.org> <1209158552.12461.53.camel@localhost.localdomain> <20080426093048.GA11443@infradead.org> <1209217153.1956.14.camel@lappy> <20080426134430.GA28205@infradead.org> Content-Type: text/plain Date: Sat, 26 Apr 2008 16:04:34 +0200 Message-Id: <1209218674.1956.17.camel@lappy> Mime-Version: 1.0 X-Mailer: Evolution 2.22.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 2008-04-26 at 09:44 -0400, Christoph Hellwig wrote: > On Sat, Apr 26, 2008 at 03:39:13PM +0200, Peter Zijlstra wrote: > > I'm guessing RCU would be a bit more work? > > Actually the whole XFS inode hash is gone now and replaced by a radix tree. > As soon as nick and your work on the lockless radix trees goes in I'm > pretty sure Dave will make use of that. Nick's RCU radix tree is already merged - its just the speculative page references and the rest of the lockless page-cache that is still missing.