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cgroup: build list of all cgroups under a given cgroupfs_root

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Build a list of all cgroups anchored at cgroupfs_root->allcg_list and
going through cgroup->allcg_node.  The list is protected by
cgroup_mutex and will be used to improve cgroup file handling.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizf@cn.fujitsu.com>
This commit is contained in:
Tejun Heo 2012-04-01 12:09:54 -07:00
parent ff4c8d503e
commit b0ca5a84fc
2 changed files with 12 additions and 0 deletions
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2
include/linux/cgroup.h
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@ -191,6 +191,8 @@ struct cgroup {
*/
struct list_head css_sets;
struct list_head allcg_node; /* cgroupfs_root->allcg_list */
/*
* Linked list running through all cgroups that can
* potentially be reaped by the release agent. Protected by