linux-kernel - Re: [PATCH] net: fix race in the receive/select

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Message-ID: <alpine.DEB.1.10.0906261111230.16400@makko.or.mcafeemobile.com>
Date:	Fri, 26 Jun 2009 11:12:15 -0700 (PDT)
From:	Davide Libenzi <davidel@...ilserver.org>
To:	Oleg Nesterov <oleg@...hat.com>
cc:	Eric Dumazet <eric.dumazet@...il.com>,
	Jiri Olsa <jolsa@...hat.com>, netdev@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	fbl@...hat.com, nhorman@...hat.com, davem@...hat.com,
	Tejun Heo <htejun@...il.com>
Subject: Re: [PATCH] net: fix race in the receive/select

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?


- Davide


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