Hello, On Sat, Aug 17, 2024 at 03:11:08PM +0800, Li Lingfeng wrote: > From: Li Lingfeng <lilingfeng3@xxxxxxxxxx> > > When a process migrates to another cgroup and the original cgroup is deleted, > the restrictions of throttled bios cannot be removed. If the restrictions > are set too low, it will take a long time to complete these bios. > > Refer to the process of deleting a disk to remove the restrictions and > issue bios when deleting the cgroup. > > This makes difference on the behavior of throttled bios: > Before: the limit of the throttled bios can't be changed and the bios will > complete under this limit; > Now: the limit will be canceled and the throttled bios will be flushed > immediately. I still don't see why this behavior is better. Wouldn't this make it easy to escape IO limits by creating cgroups, doing a bunch of IOs and then deleting them? Thanks. -- tejun