linux-kernel - Re: [PATCH 2/7] Export unusable free space index via /proc/pagetypeinfo

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Date:	Wed, 6 Jan 2010 17:29:45 +0000
From:	Mel Gorman <mel@....ul.ie>
To:	Adam Litke <agl@...ibm.com>
Cc:	Andrea Arcangeli <aarcange@...hat.com>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Avi Kivity <avi@...hat.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [PATCH 2/7] Export unusable free space index via
	/proc/pagetypeinfo

On Wed, Jan 06, 2010 at 11:10:48AM -0600, Adam Litke wrote:
> On Wed, 2010-01-06 at 16:26 +0000, Mel Gorman wrote:
> > +/*
> > + * Return an index indicating how much of the available free memory is
> > + * unusable for an allocation of the requested size.
> > + */
> > +int unusable_free_index(struct zone *zone,
> > +				unsigned int order,
> > +				struct config_page_info *info)
> > +{
> > +	/* No free memory is interpreted as all free memory is unusable */
> > +	if (info->free_pages == 0)
> > +		return 100;
> 
> Should the above be 1000?
> 

Yes. Fortunately, the value is not actually used by any of the code.
It's for consumption by people or tools.

Thanks

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab
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