Messages in this thread | | | Date | Wed, 1 Dec 2010 09:01:32 -0600 (CST) | From | Christoph Lameter <> | Subject | Re: [PATCH 3/3] Provide control over unmapped pages |
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On Tue, 30 Nov 2010, Andrew Morton wrote:
> > +#define UNMAPPED_PAGE_RATIO 16 > > Well. Giving 16 a name didn't really clarify anything. Attentive > readers will want to know what this does, why 16 was chosen and what > the effects of changing it will be.
The meaning is analoguous to the other zone reclaim ratio. But yes it should be justified and defined.
> > Reviewed-by: Christoph Lameter <cl@linux.com> > > So you're OK with shoving all this flotsam into 100,000,000 cellphones? > This was a pretty outrageous patchset!
This is a feature that has been requested over and over for years. Using /proc/vm/drop_caches for fixing situations where one simply has too many page cache pages is not so much fun in the long run.
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