On Sat, 6 Oct 2007, Dan Williams wrote:
Neil,
Here is the latest spin of the 'stripe_queue' implementation. Thanks to
raid6+bitmap testing done by Mr. James W. Laferriere there have been
several cleanups and fixes since the last release. Also, the changes
are now spread over 4 patches to isolate one conceptual change per
patch. The most significant cleanup is removing the stripe_head back
pointer from stripe_queue. This effectively makes the queuing layer
independent from the caching layer.
Expansion support needs more testing.
See the individual patch changelogs for details. Patch 1 contains
updated performance numbers.
Andrew,
These are updated in the git-md-accel tree, but I will work the
finalized versions through Neil's 'Signed-off-by' path.
Dan Williams (4):
raid5: add the stripe_queue object for tracking raid io requests (rev3)
raid5: split allocation of stripe_heads and stripe_queues
raid5: convert add_stripe_bio to add_queue_bio
raid5: use stripe_queues to prioritize the "most deserving" requests (rev7)
drivers/md/raid5.c | 1560 ++++++++++++++++++++++++++++++++------------
include/linux/raid/raid5.h | 88 ++-
2 files changed, 1200 insertions(+), 448 deletions(-)
--
Dan
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These patches & data look very impressive, do we have an ETA of when they
will be merged into mainline?
Justin.
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