uvm changes for buffer cache improvements.

1) Make the pagedaemon aware of the memory ranges and size of allocations
where memory is being requested, and pass this information on to
bufbackoff(), which will later (not yet) be used to ensure that the
buffer cache gets out of the way in the right area of memory.

Note that this commit does not yet make it *do* that - as currently
the buffer cache is all in dma-able memory and it will simply back
off.

2) Add uvm_pagerealloc_multi - to be used by the buffer cache code
for reallocating pages to particular regions.

much of this work by ariane, with smatterings of me, art,and oga

ok oga@, thib@, ariane@, deraadt@

0 files changed, 0 insertions, 0 deletions