From: Cong Wang <xiyou.wangcong@gmail.com>
To: Vlad Buslov <vladbu@mellanox.com>
Cc: Linux Kernel Network Developers <netdev@vger.kernel.org>,
Jamal Hadi Salim <jhs@mojatatu.com>,
Jiri Pirko <jiri@resnulli.us>, David Miller <davem@davemloft.net>,
Stephen Hemminger <stephen@networkplumber.org>,
Kirill Tkhai <ktkhai@virtuozzo.com>,
Nicolas Dichtel <nicolas.dichtel@6wind.com>,
Greg KH <gregkh@linuxfoundation.org>,
mark.rutland@arm.com, Leon Romanovsky <leon@kernel.org>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Florian Westphal <fw@strlen.de>, David Ahern <dsahern@gmail.com>,
christian@brauner.io, lucien xin <lucien.xin@gmail.com>,
Jakub Kicinski <jakub.kicinski@netronome.com>,
Jiri Benc <jbenc@redhat.com>
Subject: Re: [PATCH net-next v2 05/10] net: sched: use Qdisc rcu API instead of relying on rtnl lock
Date: Wed, 19 Sep 2018 15:04:47 -0700 [thread overview]
Message-ID: <CAM_iQpVKEU_RqxDPaTEo2KShKNATsHGJEa64afT-m6iadptNGw@mail.gmail.com> (raw)
In-Reply-To: <1537168660-24032-6-git-send-email-vladbu@mellanox.com>
On Mon, Sep 17, 2018 at 12:19 AM Vlad Buslov <vladbu@mellanox.com> wrote:
> +static void tcf_qdisc_put(struct Qdisc *q, bool rtnl_held)
> +{
> + if (!q)
> + return;
> +
> + if (rtnl_held)
> + qdisc_put(q);
> + else
> + qdisc_put_unlocked(q);
> +}
This is very ugly. You should know whether RTNL is held or
not when calling it.
What's more, all of your code passes true, so why do you
need a parameter for rtnl_held?
next prev parent reply other threads:[~2018-09-20 3:44 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-17 7:17 [PATCH net-next v2 00/10] Refactor classifier API to work with Qdisc/blocks without rtnl lock Vlad Buslov
2018-09-17 7:17 ` [PATCH net-next v2 01/10] net: core: netlink: add helper refcount dec and lock function Vlad Buslov
2018-09-19 21:46 ` Cong Wang
2018-09-17 7:17 ` [PATCH net-next v2 02/10] net: sched: rename qdisc_destroy() to qdisc_put() Vlad Buslov
2018-09-17 7:17 ` [PATCH net-next v2 03/10] net: sched: extend Qdisc with rcu Vlad Buslov
2018-09-19 2:45 ` David Miller
2018-09-17 7:17 ` [PATCH net-next v2 04/10] net: sched: add helper function to take reference to Qdisc Vlad Buslov
2018-09-17 7:17 ` [PATCH net-next v2 05/10] net: sched: use Qdisc rcu API instead of relying on rtnl lock Vlad Buslov
2018-09-19 22:04 ` Cong Wang [this message]
2018-09-20 7:20 ` Vlad Buslov
2018-09-21 19:29 ` Cong Wang
2018-09-17 7:17 ` [PATCH net-next v2 06/10] net: sched: change tcf block reference counter type to refcount_t Vlad Buslov
2018-09-17 7:17 ` [PATCH net-next v2 07/10] net: sched: implement functions to put and flush all chains Vlad Buslov
2018-09-17 7:17 ` [PATCH net-next v2 08/10] net: sched: protect block idr with spinlock Vlad Buslov
2018-09-19 22:09 ` Cong Wang
2018-09-20 7:36 ` Vlad Buslov
2018-09-21 19:33 ` Cong Wang
2018-09-17 7:17 ` [PATCH net-next v2 09/10] net: sched: implement tcf_block_refcnt_{get|put}() Vlad Buslov
2018-09-17 7:17 ` [PATCH net-next v2 10/10] net: sched: use reference counting for tcf blocks on rules update Vlad Buslov
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