From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jarek Poplawski Subject: Re: [PATCH net-next-2.6 v2] pkt_sched: gen_estimator: kill est_lock rwlock Date: Tue, 8 Jun 2010 12:40:52 +0000 Message-ID: <20100608124052.GB9392@ff.dom.local> References: <20100608121546.GA9392@ff.dom.local> <1276000052.2475.307.camel@edumazet-laptop> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Changli Gao , David Miller , netdev , Stephen Hemminger , Patrick McHardy To: Eric Dumazet Return-path: Received: from mail-fx0-f46.google.com ([209.85.161.46]:48549 "EHLO mail-fx0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751406Ab0FHMky (ORCPT ); Tue, 8 Jun 2010 08:40:54 -0400 Received: by fxm8 with SMTP id 8so2841143fxm.19 for ; Tue, 08 Jun 2010 05:40:53 -0700 (PDT) Content-Disposition: inline In-Reply-To: <1276000052.2475.307.camel@edumazet-laptop> Sender: netdev-owner@vger.kernel.org List-ID: On Tue, Jun 08, 2010 at 02:27:32PM +0200, Eric Dumazet wrote: > Le mardi 08 juin 2010 ?? 12:15 +0000, Jarek Poplawski a =E9crit : >=20 > >=20 > > Actually, I guess, Changli meant the bug introduced by your previou= s > > patch by removing the est_lock. With this lock (and your commit 5d9= 44) > > bstats (and API) seem "fundamentaly" safe. > >=20 >=20 > Sorry, I have no idea of what you want to say, I cant find commit 5d9= 44. >=20 Sorry, I meant the commit mentioned in your changelog which was quoted. > This was partially addressed in commit 5d944c640b4 (gen_estimator: > deadlock fix), but same problem exist for all gen_kill_estimator() > users. Jarek P.