netdev - Re: [Patch net] act_sample: get rid of tcf_sample_cleanup

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Date:   Wed, 29 Nov 2017 10:34:49 -0800
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Linux Kernel Network Developers <netdev@...r.kernel.org>
Cc:     Eric Dumazet <eric.dumazet@...il.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Jiri Pirko <jiri@...nulli.us>, Yotam Gigi <yotamg@...lanox.com>
Subject: Re: [Patch net] act_sample: get rid of tcf_sample_cleanup_rcu()

On Wed, Nov 29, 2017 at 10:32 AM, Cong Wang <xiyou.wangcong@...il.com> wrote:
> Similar to commit d7fb60b9cafb ("net_sched: get rid of tcfa_rcu"),
> TC actions don't need to respect RCU grace period, because it
> is either just detached from tc filter (standalone case) or
> it is removed together with tc filter (bound case) in which case
> RCU grace period is already respected at filter layer.

The rcu_barrier() now can be removed too...

I will send v2 shortly.