On 4/15/25 07:52, Jens Axboe wrote: > Even if blk-rq-qos isn't used or configured, dipping into the queue to > fetch ->rq_qos is a noticeable slowdown and visible in profiles. Add an > unlikely static key around blk-rq-qos, to avoid fetching this cacheline > if blk-iolatency or blk-wbt isn't configured or used. > > Signed-off-by: Jens Axboe<axboe@xxxxxxxxx> Looks good. Reviewed-by: Chaitanya Kulkarni <kch@xxxxxxxxxx> -ck
