On Wed, Jul 07, 2021 at 09:56:49AM +0800, Yu Kuai wrote: > We run a test that create millions of cgroups and blkgs, and then trigger > blkg_destroy_all(). blkg_destroy_all() will hold spin lock for a long > time in such situation. Thus release the lock when a batch of blkgs are > destroyed. > > blkcg_activate_policy() and blkcg_deactivate_policy() might have the > same problem, however, as they are basically only called from module > init/exit paths, let's leave them alone for now. > > Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx> Acked-by: Tejun Heo <tj@xxxxxxxxxx> Thanks. -- tejun
