On Mon, 22 Oct 2012, Anton Vorontsov wrote:

This patch introduces VMEVENT_ATTR_PRESSURE, the attribute reports Linux
virtual memory management pressure. There are three discrete levels:

VMEVENT_PRESSURE_LOW: Notifies that the system is reclaiming memory for
new allocations. Monitoring reclaiming activity might be useful for
maintaining overall system's cache level.

VMEVENT_PRESSURE_MED: The system is experiencing medium memory pressure,
there is some mild swapping activity. Upon this event applications may
decide to free any resources that can be easily reconstructed or re-read
from a disk.

Nit:

s/VMEVENT_PRESSURE_MED/VMEVENT_PRESSUDE_MEDIUM/

Other than that, I'm OK with this. Mel and others, what are your thoughts 
on this?

Anton, have you tested this with real world scenarios? How does it stack 
up against Android's low memory killer, for example?

			Pekka
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