239 #define for_each_mem_cgroup_tree(iter, root)		\  argument
240 	for (iter = mem_cgroup_iter(root, NULL, NULL);	\
242 	     iter = mem_cgroup_iter(root, iter, NULL))
1025 struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *root,  in mem_cgroup_iter()  argument
1037 	if (!root)  in mem_cgroup_iter()
1038 		root = root_mem_cgroup;  in mem_cgroup_iter()
1043 	if (!root->use_hierarchy && root != root_mem_cgroup) {  in mem_cgroup_iter()
1046 		return root;  in mem_cgroup_iter()
1054 		mz = mem_cgroup_nodeinfo(root, reclaim->pgdat->node_id);  in mem_cgroup_iter()
1080 		css = css_next_descendant_pre(css, &root->css);  in mem_cgroup_iter()
1100 		if (css == &root->css)  in mem_cgroup_iter()
1129 	if (prev && prev != root)  in mem_cgroup_iter()
1140 void mem_cgroup_iter_break(struct mem_cgroup *root,  in mem_cgroup_iter_break()  argument
1143 	if (!root)  in mem_cgroup_iter_break()
1144 		root = root_mem_cgroup;  in mem_cgroup_iter_break()
1145 	if (prev && prev != root)  in mem_cgroup_iter_break()
6367 enum mem_cgroup_protection mem_cgroup_protected(struct mem_cgroup *root,  in mem_cgroup_protected()  argument
6378 	if (!root)  in mem_cgroup_protected()
6379 		root = root_mem_cgroup;  in mem_cgroup_protected()
6380 	if (memcg == root)  in mem_cgroup_protected()
6395 	if (parent == root)  in mem_cgroup_protected()