netdev - Re: [PATCH net-next] tcp: md5: protects md5sig

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Date:	Wed, 01 Feb 2012 02:18:08 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	shawn.lu@...csson.com, netdev@...r.kernel.org, xiaoclu@...il.com
Subject: Re: [PATCH net-next] tcp: md5: protects md5sig_info with RCU

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Wed, 01 Feb 2012 05:45:40 +0100

> This patch makes sure we use appropriate memory barriers before
> publishing tp->md5sig_info, allowing tcp_md5_do_lookup() being used from
> tcp_v4_send_reset() without holding socket lock (upcoming patch from
> Shawn Lu)
> 
> Note we also need to respect rcu grace period before its freeing, since
> we can free socket without this grace period thanks to
> SLAB_DESTROY_BY_RCU
> 
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>

Applied, thanks.
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