CFQ IO scheduler patch series

Hi,

I have a series of patches for the CFQ IO scheduler that I'd like to get
some more testing on. The patch series is also scheduled to enter the
next -mm, but if I'd like people to consciously give it a spin on its
own as well. The patches are also available from the 'cfq' branch of the
block layer tree:

git://git.kernel.dk/data/git/linux-2.6-block.git

and I've uploaded a rolled up version here as well:

http://brick.kernel.dk/snaps/cfq-update-20070424

The patch series is essentially a series of cleanups and smaller
optimizations, but there's also a larger change in there (patches 4 to
7) that completely rework how CFQ selects which queue to process. It's
an experimental approach similar to the CFS CPU scheduler, in which
management lists are converted to a single rbtree instead.

So give it a spin if you have the time, and let me know how it performs
and/or feels for you workload and hardware.

 cfq-iosched.c |  676 ++++++++++++++++++++++++++------------------------
 1 file changed, 357 insertions(+), 319 deletions(-)

-- 
Jens Axboe