On Thu, Oct 25, 2012 at 02:08:14AM -0700, Anton Vorontsov wrote:
[...]

Maybe it makes sense to implement something like PRESSURE_MILD with an
additional nr_pages threshold, which basically hits the kernel about how
many easily reclaimable pages userland has (that would be a part of our
definition for the mild pressure level). So, essentially it will be

	if (pressure_index >= oom_level)
		return PRESSURE_OOM;
	else if (pressure_index >= med_level)
		return PRESSURE_MEDIUM;
	else if (userland_reclaimable_pages >= nr_reclaimable_pages)
		return PRESSURE_MILD;

...or we can call it PRESSURE_BALANCE, just to be precise and clear.

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