netdev - Re: [Patch net-next] net_sched: use idr to allocate bpf filter handles

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Date:   Mon, 25 Sep 2017 09:46:33 -0700
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     David Miller <davem@...emloft.net>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Chris Mi <chrism@...lanox.com>,
        Jamal Hadi Salim <jhs@...atatu.com>
Subject: Re: [Patch net-next] net_sched: use idr to allocate bpf filter handles

On Sat, Sep 23, 2017 at 5:15 PM, David Miller <davem@...emloft.net> wrote:
> If I read the code properly, the existing code allows IDs from '1' to
> and including '0x7ffffffe', whereas the new code allows up to and
> including '0x7ffffffff'.
>
> Whether intentional or not this is a change in behavior.  If it's OK,
> it should be at least documented either in a comment or in the
> commit log itself.
>
> Similarly for your other scheduler IDR changes.

Good catch! Obviously off-by-one. I agree we should keep
the old behavior no matter the reason.

I will update the patches.

Thanks.