linux-kernel - Re: [PATCH 2/2] tun: remove useless codes in tun_chr_aio_read() and tun

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Message-ID: <52A74CD1.808@gmail.com>
Date:	Tue, 10 Dec 2013 12:18:09 -0500
From:	Vlad Yasevich <vyasevich@...il.com>
To:	David Miller <davem@...emloft.net>, zwu.kernel@...il.com
CC:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	wuzhy@...ux.vnet.ibm.com
Subject: Re: [PATCH 2/2] tun: remove useless codes in tun_chr_aio_read() and
 tun_recvmsg()

On 12/09/2013 08:36 PM, David Miller wrote:
> From: Zhi Yong Wu <zwu.kernel@...il.com>
> Date: Sat,  7 Dec 2013 04:55:00 +0800
> 
>> From: Zhi Yong Wu <wuzhy@...ux.vnet.ibm.com>
>>
>> By checking related codes, it is impossible that ret > len or total_len,
>> so we should remove some useless codes in both above functions.
>>
>> Signed-off-by: Zhi Yong Wu <wuzhy@...ux.vnet.ibm.com>
> 
> Applied.

Wait a sec.  We want to be able to return a value bigger then len
to trigger a MSG_TRUNC.  Jason has patches for to fix this.  If you
apply this, we'll have to re-introduce this code back in.

Same goes for patch 1/2.

-vlad

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