using /dev/mem_notify to free caches

[Tomeu Vizoso <tomeu sugarlabs org>]

Hi,

as evince caches full pages, I wonder if would make sense for evince
to poll /dev/mem_notify and reduce the cache. Here is how claws is
doing it:

http://scm.dotsrc.org/viewvc.cgi/claws-mail/claws/src/main.c?r1=1.115.2.185&r2=1.115.2.186&pathrev=gtk2

May be a good GSoC project?

Regards,

Tomeu