From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rongqing Li <rongqing.li@windriver.com>
Subject: Re: [PATCH] Ipv6: Delete rcu_read_lock
Date: Thu, 29 Sep 2011 17:10:31 +0800
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To: "Yan, Zheng " <yanzheng@21cn.com>
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On 09/29/2011 04:52 PM, Yan, Zheng wrote:
> On Thu, Sep 29, 2011 at 4:25 PM, Rongqing Li<rongqing.li@windriver.com>  wrote:
>> On 09/29/2011 04:16 PM, Yan, Zheng wrote:
>>>
>>> I think the rcu_read_lock protects in6_dev->nd_parms.
>>>
>> It can not protect in6_dev->nd_parms.
>>
>> rcu_read_lock protects the data which is accessed by rcu_XXX,
>>
>
> I'm confused, why does neigh_parms_release() use call_rcu() to release nd_parms.
>

Same as idev, there is a reference on struct neigh_parms
which protects them

-Roy