From: David Miller <davem@davemloft.net>
Date: Wed, 22 Sep 2010 20:53:24 -0700 (PDT)

quoted text
> From: Eric Dumazet <eric.dumazet@gmail.com>
> Date: Thu, 23 Sep 2010 00:43:39 +0200
> 
>> (A) (this is used in net/sunrpc/xprtsock.c)
>> read_lock(&sk->sk_callback_lock) (without blocking BH)
>> <BH>
>> spin_lock(&sk->sk_slock.slock);
>> ...
>> read_lock(&sk->sk_callback_lock);
>> ...
> 
> What's the exact path that leads to this?  I looked quickly and couldn't
> find which sunrpc callback override does it.

Sorry, I'm being unusually dense at the moment, ignore this question :-)
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