linux-kernel - Re: [PATCH] Break out types from <linux/list.h> to <linux/list

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Message-ID: <20100702211010.GA8732@infradead.org>
Date:	Fri, 2 Jul 2010 17:10:10 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Matthew Wilcox <matthew@....cx>,
	Chris Metcalf <cmetcalf@...era.com>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH] Break out types from <linux/list.h> to
 <linux/list_types.h>.

On Fri, Jul 02, 2010 at 10:43:13PM +0200, Arnd Bergmann wrote:
> On Friday 02 July 2010 21:19:11 Matthew Wilcox wrote:
> > Why a new header file instead of linux/types.h?
> 
> I think it mostly makes sense because a list_head by itself usually
> isn't all that useful, you also want the list_add/list_for_each/...
> macros, so you end up including linux/list.h anyway.

It's useful for headers.  You can assume linux/types.h is already
included and don't have to bother to include list{_types}.h everywhere.

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