Re: [PATCH v3] blk: optimization for classic polling

From: Jens Axboe
Date: Tue Feb 13 2018 - 11:12:27 EST


On 2/13/18 8:48 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.

Thanks, applied.

--
Jens Axboe