59 	struct cgroup_root *root;  in cgroup_attach_task_all()  local
65 	for_each_root(root) {  in cgroup_attach_task_all()
68 		if (root == &cgrp_dfl_root)  in cgroup_attach_task_all()
72 		from_cgrp = task_cgroup_from_root(from, root);  in cgroup_attach_task_all()
558 	BUILD_BUG_ON(sizeof(cgrp->root->release_agent_path) < PATH_MAX);  in cgroup_release_agent_write()
573 	strlcpy(cgrp->root->release_agent_path, strstrip(buf),  in cgroup_release_agent_write()
574 		sizeof(cgrp->root->release_agent_path));  in cgroup_release_agent_write()
585 	seq_puts(seq, cgrp->root->release_agent_path);  in cgroup_release_agent_show()
690 			   ss->legacy_name, ss->root->hierarchy_id,  in proc_cgroupstats_show()
691 			   atomic_read(&ss->root->nr_cgrps),  in proc_cgroupstats_show()
803 	if (!cgrp->root->release_agent_path[0])  in cgroup1_release_agent()
813 	strlcpy(agentbuf, cgrp->root->release_agent_path, PATH_MAX);  in cgroup1_release_agent()
878 	struct cgroup_root *root = cgroup_root_from_kf(kf_root);  in cgroup1_show_options()  local
883 		if (root->subsys_mask & (1 << ssid))  in cgroup1_show_options()
885 	if (root->flags & CGRP_ROOT_NOPREFIX)  in cgroup1_show_options()
887 	if (root->flags & CGRP_ROOT_XATTR)  in cgroup1_show_options()
889 	if (root->flags & CGRP_ROOT_CPUSET_V2_MODE)  in cgroup1_show_options()
893 	if (strlen(root->release_agent_path))  in cgroup1_show_options()
895 				root->release_agent_path);  in cgroup1_show_options()
898 	if (test_bit(CGRP_CPUSET_CLONE_CHILDREN, &root->cgrp.flags))  in cgroup1_show_options()
900 	if (strlen(root->name))  in cgroup1_show_options()
901 		seq_show_option(seq, "name", root->name);  in cgroup1_show_options()
1074 	struct kernfs_root *kf_root = kernfs_root_from_sb(fc->root->d_sb);  in cgroup1_reconfigure()
1075 	struct cgroup_root *root = cgroup_root_from_kf(kf_root);  in cgroup1_reconfigure()  local
1086 	if (ctx->subsys_mask != root->subsys_mask || ctx->release_agent)  in cgroup1_reconfigure()
1090 	added_mask = ctx->subsys_mask & ~root->subsys_mask;  in cgroup1_reconfigure()
1091 	removed_mask = root->subsys_mask & ~ctx->subsys_mask;  in cgroup1_reconfigure()
1094 	if ((ctx->flags ^ root->flags) ||  in cgroup1_reconfigure()
1095 	    (ctx->name && strcmp(ctx->name, root->name))) {  in cgroup1_reconfigure()
1097 		       ctx->flags, ctx->name ?: "", root->flags, root->name);  in cgroup1_reconfigure()
1103 	if (!list_empty(&root->cgrp.self.children)) {  in cgroup1_reconfigure()
1108 	ret = rebind_subsystems(root, added_mask);  in cgroup1_reconfigure()
1116 		strcpy(root->release_agent_path, ctx->release_agent);  in cgroup1_reconfigure()
1120 	trace_cgroup_remount(root);  in cgroup1_reconfigure()
1146 	struct cgroup_root *root;  in cgroup1_root_to_use()  local
1164 		    ss->root == &cgrp_dfl_root)  in cgroup1_root_to_use()
1167 		if (!percpu_ref_tryget_live(&ss->root->cgrp.self.refcnt))  in cgroup1_root_to_use()
1169 		cgroup_put(&ss->root->cgrp);  in cgroup1_root_to_use()
1172 	for_each_root(root) {  in cgroup1_root_to_use()
1175 		if (root == &cgrp_dfl_root)  in cgroup1_root_to_use()
1184 			if (strcmp(ctx->name, root->name))  in cgroup1_root_to_use()
1194 		    (ctx->subsys_mask != root->subsys_mask)) {  in cgroup1_root_to_use()
1200 		if (root->flags ^ ctx->flags)  in cgroup1_root_to_use()
1203 		ctx->root = root;  in cgroup1_root_to_use()
1219 	root = kzalloc(sizeof(*root), GFP_KERNEL);  in cgroup1_root_to_use()
1220 	if (!root)  in cgroup1_root_to_use()
1223 	ctx->root = root;  in cgroup1_root_to_use()
1226 	ret = cgroup_setup_root(root, ctx->subsys_mask);  in cgroup1_root_to_use()
1228 		cgroup_free_root(root);  in cgroup1_root_to_use()
1244 	if (!ret && !percpu_ref_tryget_live(&ctx->root->cgrp.self.refcnt))  in cgroup1_get_tree()
1252 	if (!ret && percpu_ref_is_dying(&ctx->root->cgrp.self.refcnt)) {  in cgroup1_get_tree()