Messages in this thread | | | Subject | Re: [PATCH] blk-throttle: fix zero wait time for iops throttled group | From | Jens Axboe <> | Date | Wed, 10 Jul 2019 08:00:40 -0600 |
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On 7/8/19 9:29 AM, Konstantin Khlebnikov wrote: > After commit 991f61fe7e1d ("Blk-throttle: reduce tail io latency when iops > limit is enforced") wait time could be zero even if group is throttled and > cannot issue requests right now. As a result throtl_select_dispatch() turns > into busy-loop under irq-safe queue spinlock. > > Fix is simple: always round up target time to the next throttle slice.
Applied, thanks. In the future, please break lines at 72 chars in commit messages, I fixed it up.
-- Jens Axboe
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