From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: [PATCH] net: fix race in the receive/select Date: Fri, 26 Jun 2009 21:35:28 +0200 Message-ID: <4A452300.5080507@gmail.com> References: <20090626145027.GA6534@redhat.com> <20090626.111738.141246987.davem@davemloft.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: David Miller , davidel@xmailserver.org, oleg@redhat.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, fbl@redhat.com, nhorman@redhat.com, htejun@gmail.com To: jolsa@redhat.com Return-path: Received: from gw1.cosmosbay.com ([212.99.114.194]:47353 "EHLO gw1.cosmosbay.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753931AbZFZTgb (ORCPT ); Fri, 26 Jun 2009 15:36:31 -0400 In-Reply-To: <20090626.111738.141246987.davem@davemloft.net> Sender: netdev-owner@vger.kernel.org List-ID: David Miller a =E9crit : > From: Davide Libenzi > Date: Fri, 26 Jun 2009 11:12:15 -0700 (PDT) >=20 >> On Fri, 26 Jun 2009, Oleg Nesterov wrote: >> >>> Perhaps we can add >>> >>> void sock_poll_wait(struct file *file, struct sock *sk, poll_table= *pt) >>> { >>> if (pt) { >>> poll_wait(file, sk->sk_sleep, pt); >>> /* >>> * fat comment >>> */ >>> smp_mb(); // or smp_mb__after_unlock(); >>> } >>> } >> That'd be fine IMHO. Are DaveM and Eric OK? >=20 > No objections from me. Very good :) Jiri, please respin a patch with this idea from Oleg (We'll have to check all calls to poll_wait() in net tree) Thanks everybody