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cgroup: add cgroup_v1v2_get_from_[fd/file]()

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Add cgroup_v1v2_get_from_fd() and cgroup_v1v2_get_from_file() that
support both cgroup1 and cgroup2.

Signed-off-by: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Yosry Ahmed
2022-10-11 00:33:58 +00:00
committed by Tejun Heo
parent 03db771615
commit a6d1ce5951
2 changed files with 45 additions and 6 deletions
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include/linux/cgroup.h
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@@ -106,6 +106,7 @@ struct cgroup_subsys_state *css_tryget_online_from_dir(struct dentry *dentry,
struct cgroup *cgroup_get_from_path(const char *path);
struct cgroup *cgroup_get_from_fd(int fd);
struct cgroup *cgroup_v1v2_get_from_fd(int fd);
int cgroup_attach_task_all(struct task_struct *from, struct task_struct *);
int cgroup_transfer_tasks(struct cgroup *to, struct cgroup *from);