VM idle page zeroing

[Venkatesh Srinivas <me@xxxxxxxxxxxxxxxxxxx>]

Hi,

This is my first attempt at a idle-time VM page zeroing. I added a kernel thread, 'zeroidle', which zeros pages as it has time.

The patch is pretty rough at the minute.

http://m-net.arbornet.org/users/sv5679/dfly/0001-vm-Add-idle-thread-to-pre-zero-pages.patch

Any thoughts would be appreciated,

-- vs