netdev - Re: [PATCH 1/1] Use RCU for the UDP hash lock

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Message-ID: <20080926195024.GA2548@ami.dom.local>
Date:	Fri, 26 Sep 2008 21:50:24 +0200
From:	Jarek Poplawski <jarkao2@...il.com>
To:	Corey Minyard <minyard@....org>
Cc:	paulmck@...ux.vnet.ibm.com,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	netdev@...r.kernel.org, shemminger@...tta.com
Subject: Re: [PATCH 1/1] Use RCU for the UDP hash lock

On Fri, Sep 26, 2008 at 08:49:40AM -0500, Corey Minyard wrote:
...
> I don't believe udp_disconnect() releases the socket.   
> sk_common_release() seems to be the place where the refcount is  
> decremented.  But wherever it is done, it would have to be after the 
> unhash.

...Which, BTW, could be repeated then, so hlist_del_init() matters
yet. (Another sign of such possibility should be this "if ()" in
udp_lib_unhash().)

Jarek P.
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