linux-kernel - Re: [RFC 2/2] Use unified UUID/GUID definition in gfs2

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Date:	Tue, 03 Nov 2009 15:21:59 +0800
From:	Huang Ying <ying.huang@...el.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Joe Perches <joe@...ches.com>,
	Steven Whitehouse <swhiteho@...hat.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC 2/2] Use unified UUID/GUID definition in gfs2

On Tue, 2009-11-03 at 09:02 +0800, Andrew Morton wrote: 
> On Tue, 03 Nov 2009 08:44:48 +0800
> Huang Ying <ying.huang@...el.com> wrote:
> 
> > For stuff of no use to user space, I think it can be enclosed into
> > 
> > #ifdef __KERNEL__
> > #endif
> 
> It can, but that's ugly.  Clearly separating the inclusions into uuid-kernel.h
> and uuid-user-h is nicer, no?

But it seems that __KERNEL__ is common used method now. There are about
370 out of 3085 files under linux/include use __KERNEL__. The data are
gotten via:

# cd linux/include
# find . -type f | wc -l
# grep __KERNEL__ -lr * | wc -l

Best Regards,
Huang Ying


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