From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753439AbZAEEkf (ORCPT ); Sun, 4 Jan 2009 23:40:35 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752244AbZAEEk1 (ORCPT ); Sun, 4 Jan 2009 23:40:27 -0500 Received: from e8.ny.us.ibm.com ([32.97.182.138]:35810 "EHLO e8.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752230AbZAEEk0 (ORCPT ); Sun, 4 Jan 2009 23:40:26 -0500 Date: Sun, 4 Jan 2009 20:40:23 -0800 From: "Paul E. McKenney" To: Lai Jiangshan Cc: Manfred Spraul , linux-kernel@vger.kernel.org, akpm@linux-foundation.org Subject: Re: [RFC, PATCH] kernel/rcu: add kfree_rcu Message-ID: <20090105044023.GC8080@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com References: <200901021159.n02BxDLg024728@mail.q-ag.de> <20090102185543.GE6842@linux.vnet.ibm.com> <49604E19.8040502@cn.fujitsu.com> <20090104194851.GM6958@linux.vnet.ibm.com> <496174EB.4030601@cn.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <496174EB.4030601@cn.fujitsu.com> User-Agent: Mutt/1.5.15+20070412 (2007-04-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jan 05, 2009 at 10:48:11AM +0800, Lai Jiangshan wrote: > Paul E. McKenney wrote: > > > > In any case, I do apologize -- since I didn't see anything from you I > > incorrectly assumed that you had given up on this patch. Please accept > > my apologies! > > It's my fault. > > I'm a very low-yield developer. Well, I am certainly not the highest-yield developer around, and I have probably put in at least 30,000 hours of programming over the past 35 years, and probably half of those between 1981 and 1985. Of course, a fair fraction of those hours were in languages and environments that are pretty much irrelevant these days. Nevertheless, my guess is that you need to invest about 10,000 hours to really master programming, which works out to about five years at 40 hours per week of doing nothing but designing, coding, and debugging. So please don't give up! > I have given up on unaccepted cleanup-patches, kfree_rcu() is not a > cleanup for reducing lines of code, it has some significances for kernel. I agree that it would be a nice addition. > > Would it be possible for you and Manfred to agree on a common patch, and > > to have one of you submit it with both of you having Signed-off-by on it? > > All are OK. > > I NAK-ed only for deferring kfree_rcu() being accepted. > > I'm not concerned about whether I'm patches' Author or I'm in the > Signed-off-by list. I greatly appreciate the fact that you are more interested in the quality of the Linux kernel than in credit. That said, I would like the solution to be something that both you and Manfred agree on. Thanx, Paul