Re: [PATCH 2/3] fadvise: Add _VOLATILE,_ISVOLATILE, and_NONVOLATILE flags

[Peter Zijlstra]

On Tue, 2012-04-24 at 10:49 -0700, John Stultz wrote:
> +/*
> + * Purges volatile ranges when under memory pressure
> + */
> +static int volatile_shrink(struct shrinker *ignored, struct shrink_control *sc)
> +{ 

Hmm, I would have expected regular page reclaim to know about this
instead of using a shrinker interface. Is this done specifically to
avoid growing small holes in all ranges and instead dump entire ranges
thereby keeping other ranges usable?
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