blk-throttle: add downgrade logic

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When queue state machine is in LIMIT_MAX state, but a cgroup is below
its low limit for some time, the queue should be downgraded to lower
state as one cgroup's low limit isn't met.

Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

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Shaohua Li 2017-03-27 10:51:35 -07:00 • committed by Jens Axboe

parent c79892c557

commit 3f0abd8066

1 changed files with 156 additions and 0 deletions

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block/blk-throttle.c

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