From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 15 Apr 2009 02:31:04 -0700 (PDT) Message-Id: <20090415.023104.82135803.davem@davemloft.net> From: David Miller In-Reply-To: <49E5A896.90408@cosmosbay.com> References: <49E59A1C.9030108@cn.fujitsu.com> <20090415083223.GF21342@psychotron.englab.brq.redhat.com> <49E5A896.90408@cosmosbay.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: Re: [Bridge] [PATCH 1/3] net: introduce a list of device addresses dev_addr_list List-Id: Linux Ethernet Bridging List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: dada1@cosmosbay.com Cc: ivecera@redhat.com, fubar@us.ibm.com, jpirko@redhat.com, netdev@vger.kernel.org, bridge@lists.linux-foundation.org, lizf@cn.fujitsu.com, linux-kernel@vger.kernel.org, mschmidt@redhat.com, jgarzik@pobox.com, bonding-devel@lists.sourceforge.net From: Eric Dumazet Date: Wed, 15 Apr 2009 11:27:50 +0200 > Since you obviously need a write lock here to be sure following > can be done by one cpu only. > > You have same problem all over this patch. RTNL semaphore is held across all modification operations.