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

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Message-ID: <1493297179.6453.105.camel@edumazet-glaptop3.roam.corp.google.com>
Date:   Thu, 27 Apr 2017 05:46:19 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     netdev@...r.kernel.org
Subject: Re: [Patch net-next] ipv4: get rid of ip_ra_lock

On Wed, 2017-04-26 at 13:55 -0700, Cong Wang wrote:
> 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,
> we just need to disable BH there.
> 
> Signed-off-by: Cong Wang <xiyou.wangcong@...il.com>
> ---

Looks great, but reading again this code, I believe we do not need to
disable BH at all ?

Thanks.