57 	struct cgroup_root *root;  in cgroup_attach_task_all()  local
63 	for_each_root(root) {  in cgroup_attach_task_all()
66 		if (root == &cgrp_dfl_root)  in cgroup_attach_task_all()
70 		from_cgrp = task_cgroup_from_root(from, root);  in cgroup_attach_task_all()
554 	BUILD_BUG_ON(sizeof(cgrp->root->release_agent_path) < PATH_MAX);  in cgroup_release_agent_write()
569 	strlcpy(cgrp->root->release_agent_path, strstrip(buf),  in cgroup_release_agent_write()
570 		sizeof(cgrp->root->release_agent_path));  in cgroup_release_agent_write()
581 	seq_puts(seq, cgrp->root->release_agent_path);  in cgroup_release_agent_show()
686 			   ss->legacy_name, ss->root->hierarchy_id,  in proc_cgroupstats_show()
687 			   atomic_read(&ss->root->nr_cgrps),  in proc_cgroupstats_show()
797 	if (!cgrp->root->release_agent_path[0])  in cgroup1_release_agent()
807 	strlcpy(agentbuf, cgrp->root->release_agent_path, PATH_MAX);  in cgroup1_release_agent()
872 	struct cgroup_root *root = cgroup_root_from_kf(kf_root);  in cgroup1_show_options()  local
877 		if (root->subsys_mask & (1 << ssid))  in cgroup1_show_options()
879 	if (root->flags & CGRP_ROOT_NOPREFIX)  in cgroup1_show_options()
881 	if (root->flags & CGRP_ROOT_XATTR)  in cgroup1_show_options()
883 	if (root->flags & CGRP_ROOT_CPUSET_V2_MODE)  in cgroup1_show_options()
887 	if (strlen(root->release_agent_path))  in cgroup1_show_options()
889 				root->release_agent_path);  in cgroup1_show_options()
892 	if (test_bit(CGRP_CPUSET_CLONE_CHILDREN, &root->cgrp.flags))  in cgroup1_show_options()
894 	if (strlen(root->name))  in cgroup1_show_options()
895 		seq_show_option(seq, "name", root->name);  in cgroup1_show_options()
1072 	struct kernfs_root *kf_root = kernfs_root_from_sb(fc->root->d_sb);  in cgroup1_reconfigure()
1073 	struct cgroup_root *root = cgroup_root_from_kf(kf_root);  in cgroup1_reconfigure()  local
1084 	if (ctx->subsys_mask != root->subsys_mask || ctx->release_agent)  in cgroup1_reconfigure()
1088 	added_mask = ctx->subsys_mask & ~root->subsys_mask;  in cgroup1_reconfigure()
1089 	removed_mask = root->subsys_mask & ~ctx->subsys_mask;  in cgroup1_reconfigure()
1092 	if ((ctx->flags ^ root->flags) ||  in cgroup1_reconfigure()
1093 	    (ctx->name && strcmp(ctx->name, root->name))) {  in cgroup1_reconfigure()
1095 		       ctx->flags, ctx->name ?: "", root->flags, root->name);  in cgroup1_reconfigure()
1101 	if (!list_empty(&root->cgrp.self.children)) {  in cgroup1_reconfigure()
1106 	ret = rebind_subsystems(root, added_mask);  in cgroup1_reconfigure()
1114 		strcpy(root->release_agent_path, ctx->release_agent);  in cgroup1_reconfigure()
1118 	trace_cgroup_remount(root);  in cgroup1_reconfigure()
1144 	struct cgroup_root *root;  in cgroup1_root_to_use()  local
1162 		    ss->root == &cgrp_dfl_root)  in cgroup1_root_to_use()
1165 		if (!percpu_ref_tryget_live(&ss->root->cgrp.self.refcnt))  in cgroup1_root_to_use()
1167 		cgroup_put(&ss->root->cgrp);  in cgroup1_root_to_use()
1170 	for_each_root(root) {  in cgroup1_root_to_use()
1173 		if (root == &cgrp_dfl_root)  in cgroup1_root_to_use()
1182 			if (strcmp(ctx->name, root->name))  in cgroup1_root_to_use()
1192 		    (ctx->subsys_mask != root->subsys_mask)) {  in cgroup1_root_to_use()
1198 		if (root->flags ^ ctx->flags)  in cgroup1_root_to_use()
1201 		ctx->root = root;  in cgroup1_root_to_use()
1217 	root = kzalloc(sizeof(*root), GFP_KERNEL);  in cgroup1_root_to_use()
1218 	if (!root)  in cgroup1_root_to_use()
1221 	ctx->root = root;  in cgroup1_root_to_use()
1224 	ret = cgroup_setup_root(root, ctx->subsys_mask);  in cgroup1_root_to_use()
1226 		cgroup_free_root(root);  in cgroup1_root_to_use()
1242 	if (!ret && !percpu_ref_tryget_live(&ctx->root->cgrp.self.refcnt))  in cgroup1_get_tree()
1250 	if (!ret && percpu_ref_is_dying(&ctx->root->cgrp.self.refcnt)) {  in cgroup1_get_tree()