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Subject: Re: unregister_netdevice: waiting for DEV to become free (2)
To:     Stephen Suryaputra <ssuryaextr@gmail.com>
Cc:     Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
        Julian Anastasov <ja@ssi.bg>,
        Cong Wang <xiyou.wangcong@gmail.com>,
        syzbot <syzbot+30209ea299c09d8785c9@syzkaller.appspotmail.com>,
        ddstreet@ieee.org, dvyukov@google.com,
        linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
        syzkaller-bugs@googlegroups.com
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 <20190421204126.GA19213@ubuntu>
From:   David Ahern <dsahern@gmail.com>
Message-ID: <458669e6-3d94-1daf-f80b-3c8d740790fa@gmail.com>
Date:   Mon, 22 Apr 2019 08:58:31 -0600
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On 4/21/19 2:41 PM, Stephen Suryaputra wrote:
> Hi David,
> 
> I looked at patchwork. This patch hasn't been accepted. Is there a plan
> to resubmit? It is very useful. I had to debug refcnt issues multiple
> times for my employer.

I think the inlined versions of dev_put and dev_hold are better for
performance.

I could submit it with a DEBUG config to enable. It has been invaluable
to me over the past 3+ years debugging refcount problems.