On Mon, 15 Jan 2001, Jamie Lokier wrote:

Freeing pages aggressively from a process that's paging lots will make
that process page more, meaning more aggressive freeing etc. etc.

First, we are not necessarily freeing pages from the process. We're just
unmapping the pages and putting them on the inactive lists so they can be
actually written to swap later when they become relatively old (because
the process did not faulted the page in).

Also, the process which is trying to free pages by itself will almost
certainly do IO (to sync dirty pages), which avoids it from screwing up
the system. 

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