Tejun Heo <tj@xxxxxxxxxx> writes: > This is necessary for making async cfq_cgroups per-cfq_group instead > of per-cfq_data. While this change makes cfq_get_queue() perform RCU > locking and look up cfq_group even when it reuses async queue, the > extra overhead is extremely unlikely to be noticeable given that this > is already sitting behind cic->cfqq[] cache and the overall cost of > cfq operation. > > Signed-off-by: Tejun Heo <tj@xxxxxxxxxx> > Cc: Vivek Goyal <vgoyal@xxxxxxxxxx> > Cc: Arianna Avanzini <avanzini.arianna@xxxxxxxxx> Reviewed-by: Jeff Moyer <jmoyer@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
