netdev - Re: [PATCH] vhost: Drop linux/socket.h

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Date:	Fri, 16 Aug 2013 22:29:46 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	asias@...hat.com
Cc:	netdev@...r.kernel.org, mst@...hat.com, jasowang@...hat.com,
	kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH] vhost: Drop linux/socket.h

From: Asias He <asias@...hat.com>
Date: Fri, 16 Aug 2013 17:27:43 +0800

> On Fri, Aug 16, 2013 at 12:31:59AM -0700, David Miller wrote:
>> From: Asias He <asias@...hat.com>
>> Date: Fri, 16 Aug 2013 09:27:43 +0800
>> 
>> > On Thu, Aug 15, 2013 at 02:07:40PM -0700, David Miller wrote:
>> >> From: Asias He <asias@...hat.com>
>> >> Date: Thu, 15 Aug 2013 11:20:16 +0800
>> >> 
>> >> > memcpy_fromiovec is moved to lib/iovec.c. No need to include
>> >> > linux/socket.h for it.
>> >> > 
>> >> > Signed-off-by: Asias He <asias@...hat.com>
>> >> 
>> >> You can't do this.
>> >> 
>> >> Because this file doesn't include the header file that
>> >> provides the declaration, which is linux/uio.h
>> > 
>> > vhost.c includes drivers/vhost/vhost.h. In drivers/vhost/vhost.h, we
>> > have linux/uio.h included.
>> 
>> Nothing in vhost.h needs linux/uio.h right?  That's very poor style,
>> include the header where the dependency exists which is vhost.c
> 
> We use 'struct iovec' in vhost.h which needs linux/uio.h, no?
> 
> So, how about including linux/uio.h in both vhost.c and vhost.h.

That sounds good.
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