netdev - Re: [PATCH v2 1/2] cxgb4: sched: Use refcount

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Message-ID: <CA+FuTSc8WBx2PCUhn-sLtYHQR-OROXm2pUN9SDj7P-Bd8432UQ@mail.gmail.com>
Date:   Fri, 2 Aug 2019 09:39:51 -0400
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Chuhong Yuan <hslester96@...il.com>
Cc:     Vishal Kulkarni <vishal@...lsio.com>,
        "David S . Miller" <davem@...emloft.net>,
        Network Development <netdev@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] cxgb4: sched: Use refcount_t for refcount

On Fri, Aug 2, 2019 at 4:36 AM Chuhong Yuan <hslester96@...il.com> wrote:
>
> refcount_t is better for reference counters since its
> implementation can prevent overflows.
> So convert atomic_t ref counters to refcount_t.
>
> Signed-off-by: Chuhong Yuan <hslester96@...il.com>
> ---
> Changes in v2:
>   - Convert refcount from 0-base to 1-base.

This changes the initial value from 0 to 1, but does not change the
release condition. So this introduces an accounting bug?