On Tue, 19 Dec 2023 09:28:33 +0800, Ming Lei wrote:
> blkg_lookup() is called with either queue_lock or rcu read lock, so
> use rcu_dereference_check(lockdep_is_held(&q->queue_lock)) for
> retrieving 'blkg', which way models the check exactly for covering
> queue lock or rcu read lock.
>
> Fix lockdep warning of "block/blk-cgroup.h:254 suspicious rcu_dereference_check() usage!"
> from blkg_lookup().
>
> [...]
Applied, thanks!
[1/1] blk-cgroup: fix rcu lockdep warning in blkg_lookup()
commit: 393cd8ffd832f23eec3a105553eff622e8198918
Best regards,
--
Jens Axboe
