netdev - Re: [Patch net-next v2] ipv4: get rid of ip_ra

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Message-Id: <20170430.224426.1735697418710301007.davem@davemloft.net>
Date:   Sun, 30 Apr 2017 22:44:26 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     xiyou.wangcong@...il.com
Cc:     netdev@...r.kernel.org
Subject: Re: [Patch net-next v2] ipv4: get rid of ip_ra_lock

From: Cong Wang <xiyou.wangcong@...il.com>
Date: Fri, 28 Apr 2017 10:04:29 -0700

> After commit 1215e51edad1 ("ipv4: fix a deadlock in ip_ra_control")
> we always take RTNL lock for ip_ra_control() which is the only place
> we update the list ip_ra_chain, so the ip_ra_lock is no longer needed.
> 
> As Eric points out, BH does not need to disable either, RCU readers
> don't care.
> 
> Signed-off-by: Cong Wang <xiyou.wangcong@...il.com>

Applied.