netdev - Re: [PATCH net-next] tun: fix ubuf refcount incorrectly on error path

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Message-ID: <b70d75f3-d717-4cd6-4966-299916a223c3@redhat.com>
Date:   Tue, 8 Dec 2020 10:32:51 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     wangyunjian <wangyunjian@...wei.com>,
        "mst@...hat.com" <mst@...hat.com>
Cc:     "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "Lilijun (Jerry)" <jerry.lilijun@...wei.com>,
        xudingke <xudingke@...wei.com>
Subject: Re: [PATCH net-next] tun: fix ubuf refcount incorrectly on error path


On 2020/12/7 下午9:38, wangyunjian wrote:
> I think the newly added code is easy to miss this problem, so I want to
> copy ubuf_info until we're sure there's no errors.
>
> Thanks,
> Yunjian


But isn't this actually a disabling of zerocopy?

Thanks