From mboxrd@z Thu Jan 1 00:00:00 1970 From: Patrick McHardy Subject: Re: [PATCH] pkt_sched: sch_api: Remove qdisc_list_lock Date: Tue, 25 Nov 2008 12:44:21 +0100 Message-ID: <492BE515.1080703@trash.net> References: <20081125112941.GA8136@ff.dom.local> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Cc: David Miller , Herbert Xu , netdev@vger.kernel.org To: Jarek Poplawski Return-path: Received: from stinky.trash.net ([213.144.137.162]:56388 "EHLO stinky.trash.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754045AbYKYLob (ORCPT ); Tue, 25 Nov 2008 06:44:31 -0500 In-Reply-To: <20081125112941.GA8136@ff.dom.local> Sender: netdev-owner@vger.kernel.org List-ID: Jarek Poplawski wrote: > After implementing qdisc->ops->peek() there is no more calling > qdisc_tree_decrease_qlen() without rtnl_lock(), so qdisc_list_lock > added by commit: f6e0b239a2657ea8cb67f0d83d0bfdbfd19a481b "pkt_sched: > Fix qdisc list locking" can be removed. I might be misunderstanding something, but qdisc_tree_decrease_qlen() doesn't need rtnl_lock() but the sch_tree_lock() since it changes q.qlen.