tmpfs - Handle low memory situations a little better (2)
* When handling pageout daemon requests we want to try to free pages
directly to the VM page cache or the freeq and not necessarily cycle
them through active or inactive.
Shortcutting to the cache/free queues will allow the machine to
unstick much more quickly which is particularly important on boxes
with a lot of memory because the pageout hysteresis runs in such a
large range.
* Greatly improves monster's performance under extreme tmpfs write loads.