cgroup: remove now unused css_depth()
Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Li Zefan <lizefan@huawei.com>
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@ -848,7 +848,6 @@ bool css_is_ancestor(struct cgroup_subsys_state *cg,
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/* Get id and depth of css */
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unsigned short css_id(struct cgroup_subsys_state *css);
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unsigned short css_depth(struct cgroup_subsys_state *css);
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struct cgroup_subsys_state *cgroup_css_from_dir(struct file *f, int id);
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#else /* !CONFIG_CGROUPS */
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@ -5227,18 +5227,6 @@ unsigned short css_id(struct cgroup_subsys_state *css)
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}
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EXPORT_SYMBOL_GPL(css_id);
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unsigned short css_depth(struct cgroup_subsys_state *css)
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{
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struct css_id *cssid;
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cssid = rcu_dereference_check(css->id, css_refcnt(css));
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if (cssid)
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return cssid->depth;
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return 0;
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}
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EXPORT_SYMBOL_GPL(css_depth);
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/**
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* css_is_ancestor - test "root" css is an ancestor of "child"
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* @child: the css to be tested.
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