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Tejun Heo authored
Use RCU safe list operations for cgroup->children. This will be used to implement cgroup children / descendant walking which can be used by controllers. Note that cgroup_create() now puts a new cgroup at the end of the ->children list instead of head. This isn't strictly necessary but is done so that the iteration order is more conventional. Signed-off-by:
Tejun Heo <tj@kernel.org> Reviewed-by:
Michal Hocko <mhocko@suse.cz> Reviewed-by:
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by:
Li Zefan <lizefan@huawei.com>
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