Re: [net PATCH] tuntap: set SOCK_ZEROCOPY flag during open

From: David Miller
Date: Wed Jun 12 2013 - 03:45:39 EST

From: "Michael S. Tsirkin" <mst@xxxxxxxxxx>
Date: Tue, 11 Jun 2013 16:17:50 +0300

> On Sat, Jun 08, 2013 at 02:17:41PM +0800, Jason Wang wrote:
>>Cc:, davem@xxxxxxxxxxxxx,
>> netdev@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
>> Commit 54f968d6efdbf7dec36faa44fc11f01b0e4d1990
>> (tuntap: move socket to tun_file) forgets to set SOCK_ZEROCOPY flag, which will
>> prevent vhost_net from doing zercopy w/ tap. This patch fixes this by setting
>> it during file open.
>> Cc: Michael S. Tsirkin <mst@xxxxxxxxxx>
>> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
> One of the addresses in the Cc list (
> is clearly a mistake, which probably explains why it didn't
> get into patchwork.
> I have bounced it to correct addresses, hope this
> helps instead of making even more of a mess of it.
> For 3.10 and -stable:
> Acked-by: Michael S. Tsirkin <mst@xxxxxxxxxx>

Applied and queued up for -stable, thanks.
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