linux-kernel - Re: [patch 4/9] Guest page hinting: volatile swap cache.

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Message-Id: <1157124802.21733.16.camel@localhost>
Date:	Fri, 01 Sep 2006 17:33:22 +0200
From:	Martin Schwidefsky <schwidefsky@...ibm.com>
To:	Dave Hansen <haveblue@...ibm.com>
Cc:	linux-kernel@...r.kernel.org, virtualization@...ts.osdl.org,
	akpm@...l.org, nickpiggin@...oo.com.au, frankeh@...son.ibm.com,
	rhim@...gateh.edu
Subject: Re: [patch 4/9] Guest page hinting: volatile swap cache.

On Fri, 2006-09-01 at 07:58 -0700, Dave Hansen wrote:
> > +#if defined(CONFIG_PAGE_STATES)
> 
> This is a bit odd.  Why not use an #ifdef like the rest of the kernel?

Personal preference I guess. If you have multiple macros you want to
test for you need to use "#if defined(a) && defined(b)", there is no
equivalent #ifndef notation.

-- 
blue skies,
  Martin.

Martin Schwidefsky
Linux for zSeries Development & Services
IBM Deutschland Entwicklung GmbH

"Reality continues to ruin my life." - Calvin.


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