netdev - Re: [Patch net-next] net_sched: hold tcf

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Message-ID: <CAM_iQpUgDurOWfXHdx_aTBS2L0h1QWUFe-du3W6CsZw8jfaF7w@mail.gmail.com>
Date:	Thu, 17 Jul 2014 14:25:17 -0700
From:	Cong Wang <xiyou.wangcong@...il.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Jamal Hadi Salim <jhs@...atatu.com>,
	Linux Kernel Network Developers <netdev@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Cong Wang <cwang@...pensource.com>
Subject: Re: [Patch net-next] net_sched: hold tcf_lock in netdevice notifier

On Thu, Jul 17, 2014 at 11:17 AM, Eric Dumazet <eric.dumazet@...il.com> wrote:
>
> Anyway, tcfm_dev should probably be RCU protected.
>

Not sure how much we gain from making it RCU. We anyway
need to hold that spinlock on fast path since we need to
update its time stamp and stats.

I would just leave it as is.
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