Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751139AbVJOMDr (ORCPT ); Sat, 15 Oct 2005 08:03:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751138AbVJOMDr (ORCPT ); Sat, 15 Oct 2005 08:03:47 -0400 Received: from 22.107.233.220.exetel.com.au ([220.233.107.22]:28178 "EHLO arnor.apana.org.au") by vger.kernel.org with ESMTP id S1751139AbVJOMDr (ORCPT ); Sat, 15 Oct 2005 08:03:47 -0400 From: Herbert Xu To: suzannew@cs.pdx.edu (Suzanne Wood) Subject: Re: [RFC][PATCH] rcu in drivers/net/hamradio Cc: linux-kernel@vger.kernel.org, g4klx@g4klx.demon.co.uk, hch@infradead.org, jreuter@yaina.de, paulmck@us.ibm.com, suzannew@cs.pdx.edu, walpole@cs.pdx.edu Organization: Core In-Reply-To: <200510140804.j9E84nwG026920@rastaban.cs.pdx.edu> X-Newsgroups: apana.lists.os.linux.kernel User-Agent: tin/1.7.4-20040225 ("Benbecula") (UNIX) (Linux/2.4.27-hx-1-686-smp (i686)) Message-Id: Date: Sat, 15 Oct 2005 22:03:26 +1000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 968 Lines: 23 Suzanne Wood wrote: > > (3) bpq_free_device() calls list_del_rcu() which, according > to list.h, requires synchronize_rcu() which can block or > call_rcu() or call_rcu_bh() which cannot block. > None of these is called anywhere in the directory drivers/net, > so synchronize_irq() may address this. > (synchronize_sched() is called in drivers/net/sis190.c and > r8169.c with FIXME comment about synchronize_irq().) The synchronisation is carried out by unregister_netdevice. Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/