On 7/26/25 3:03 AM, Yu Kuai wrote: > From: Yu Kuai <yukuai3@xxxxxxxxxx> > > Currently issue io can grab queue_lock three times from bfq_bio_merge(), > bfq_limit_depth() and bfq_prepare_request(), the queue_lock is not > necessary if icq is already created because both queue and ioc can't be > freed before io issuing is done, hence remove the unnecessary queue_lock > and use rcu to protect radix tree lookup. > > Noted this is also a prep patch to support request batch dispatching[1]. > > [1] https://lore.kernel.org/all/20250722072431.610354-1-yukuai1@xxxxxxxxxxxxxxx/ > Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx> Look OK. Reviewed-by: Damien Le Moal <dlemoal@xxxxxxxxxx> -- Damien Le Moal Western Digital Research
