On Sun, Oct 29, 2023 at 06:14:29AM +0000, Yafang Shao wrote: > At present, when we perform operations on the cgroup root_list, we must > hold the cgroup_mutex, which is a relatively heavyweight lock. In reality, > we can make operations on this list RCU-safe, eliminating the need to hold > the cgroup_mutex during traversal. Modifications to the list only occur in > the cgroup root setup and destroy paths, which should be infrequent in a > production environment. In contrast, traversal may occur frequently. > Therefore, making it RCU-safe would be beneficial. > > Signed-off-by: Yafang Shao <laoar.shao@xxxxxxxxx> Acked-by: Tejun Heo <tj@xxxxxxxxxx> Thanks. -- tejun
