[MOCKUP] sched/mm: Lightweight lazy mm refcounting

This is a mockup.  It's designed to illustrate the algorithm and how the
code might be structured.  There are several things blatantly wrong with
it:

The coding stype is not up to kernel standards.  I have prototypes in the
wrong places and other hacks.

There's a problem with mm_cpumask() not being reliable.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
3 files changed