From: Anton Blanchard <anton@samba.org>

We were passing in the hole size as kB not pages to free_area_init which
made the VM misbehave.  This only hit on POWER3 because POWER4 and newer
places IO above all memory and so doesnt have a hole.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>