vm_map (9) + MAP_PREFAULT and MAP_PREFAULT_PARTIAL

[Alexej Sokolov]

Hello, 
could anyone explain what exactly do the cow-flags MAP_PREFAULT_PARTIAL,
MAP_PREFAULT. I couldn't understand it from man pages and from source
code. 
It's mean that the pages will be wired ? 

Thanks, 

-- 
Alexej Sokolov <bsd.quest at googlemail.com>