Messages in this thread | | | Subject | Re: [PATCH v2 RESENT] blk: optimization for classic polling | From | Jens Axboe <> | Date | Tue, 13 Feb 2018 07:42:20 -0700 |
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On 2/13/18 11:56 AM, Nitesh Shetty wrote: > This removes the dependency on interrupts to wake up task. Set task > state as TASK_RUNNING, if need_resched() returns true, > while polling for IO completion. > Earlier, polling task used to sleep, relying on interrupt to wake it up. > This made some IO take very long when interrupt-coalescing is enabled in > NVMe.
__set_current_state() should suffice here.
-- Jens Axboe
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