From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH RFC] pkt_sched: Remove smp_wmb() in qdisc_watchdog() Date: Mon, 22 Dec 2008 19:44:58 -0800 (PST) Message-ID: <20081222.194458.92515786.davem@davemloft.net> References: <20081219113047.GA17826@ff.dom.local> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: shemminger@vyatta.com, netdev@vger.kernel.org To: jarkao2@gmail.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:52547 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1753419AbYLWDo4 (ORCPT ); Mon, 22 Dec 2008 22:44:56 -0500 In-Reply-To: <20081219113047.GA17826@ff.dom.local> Sender: netdev-owner@vger.kernel.org List-ID: From: Jarek Poplawski Date: Fri, 19 Dec 2008 11:30:47 +0000 > While implementing a TCQ_F_THROTTLED flag there was used an smp_wmb() > in qdisc_watchdog(), but since this flag is practically used only in > sch_netem(), and since it's not even clear what reordering is avoided > here (TCQ_F_THROTTLED vs. __QDISC_STATE_SCHED?) it seems the barrier > could be safely removed. > > Signed-off-by: Jarek Poplawski Applied to net-next-2.6, thanks Jarek.