linux-kernel - Re: [PATCH] net/mlx4_core: Use refcount

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Message-ID: <47bb83d0111f1132bbf532c16be483c5efbe839f.camel@mellanox.com>
Date:   Fri, 2 Aug 2019 18:38:12 +0000
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     "hslester96@...il.com" <hslester96@...il.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        Tariq Toukan <tariqt@...lanox.com>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH] net/mlx4_core: Use refcount_t for refcount

On Sat, 2019-08-03 at 00:10 +0800, Chuhong Yuan wrote:
> Chuhong Yuan <hslester96@...il.com> 于2019年8月2日周五 下午8:10写道：
> > refcount_t is better for reference counters since its
> > implementation can prevent overflows.
> > So convert atomic_t ref counters to refcount_t.
> > 
> > Also convert refcount from 0-based to 1-based.
> > 
> 
> It seems that directly converting refcount from 0-based
> to 1-based is infeasible.
> I am sorry for this mistake.

Just curious, why not keep it 0 based and use refcout_t ?

refcount API should have the same semantics as atomic_t API .. no ?