netdev - Re: [PATCH net-next 08/13] net: sched: rename tcf_block_get{_ext}() and tcf_block_put{

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Message-ID: <vbfin3bm8ch.fsf@reg-r-vrt-018-180.mtr.labs.mlnx>
Date:   Wed, 12 Sep 2018 11:24:30 +0300
From:   Vlad Buslov <vladbu@...lanox.com>
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Jiri Pirko <jiri@...nulli.us>,
        David Miller <davem@...emloft.net>,
        Stephen Hemminger <stephen@...workplumber.org>,
        Kirill Tkhai <ktkhai@...tuozzo.com>,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        Nicolas Dichtel <nicolas.dichtel@...nd.com>,
        Leon Romanovsky <leon@...nel.org>,
        Greg KH <gregkh@...uxfoundation.org>, mark.rutland@....com,
        Florian Westphal <fw@...len.de>,
        David Ahern <dsahern@...il.com>,
        lucien xin <lucien.xin@...il.com>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>,
        Christian Brauner <christian.brauner@...ntu.com>,
        Jiri Benc <jbenc@...hat.com>
Subject: Re: [PATCH net-next 08/13] net: sched: rename tcf_block_get{_ext}() and tcf_block_put{_ext}()


On Fri 07 Sep 2018 at 20:09, Cong Wang <xiyou.wangcong@...il.com> wrote:
> On Thu, Sep 6, 2018 at 12:59 AM Vlad Buslov <vladbu@...lanox.com> wrote:
>>
>> Functions tcf_block_get{_ext}() and tcf_block_put{_ext}() actually
>> attach/detach block to specific Qdisc besides just taking/putting
>> reference. Rename them according to their purpose.
>
> Where exactly does it attach to?
>
> Each qdisc provides a pointer to a pointer of a block, like
> &cl->block. It is where the result is saved to. It takes a parameter
> of Qdisc* merely for read-only purpose.

tcf_block_attach_ext() passes qdisc parameter to tcf_block_owner_add()
which saves qdisc to new tcf_block_owner_item and adds the item to
block's owner list. I proposed several naming options for these
functions to Jiri on internal review and he suggested "attach" as better
option.

>
> So, renaming it to *attach() is even confusing, at least not
> any better. Please find other names or leave them as they are.

What would you recommend?