61 	struct cgroup_root *root;  in cgroup_attach_task_all()  local
66 	for_each_root(root) {  in cgroup_attach_task_all()
69 		if (root == &cgrp_dfl_root)  in cgroup_attach_task_all()
73 		from_cgrp = task_cgroup_from_root(from, root);  in cgroup_attach_task_all()
550 	BUILD_BUG_ON(sizeof(cgrp->root->release_agent_path) < PATH_MAX);  in cgroup_release_agent_write()
556 	strlcpy(cgrp->root->release_agent_path, strstrip(buf),  in cgroup_release_agent_write()
557 		sizeof(cgrp->root->release_agent_path));  in cgroup_release_agent_write()
568 	seq_puts(seq, cgrp->root->release_agent_path);  in cgroup_release_agent_show()
673 			   ss->legacy_name, ss->root->hierarchy_id,  in proc_cgroupstats_show()
674 			   atomic_read(&ss->root->nr_cgrps),  in proc_cgroupstats_show()
786 	agentbuf = kstrdup(cgrp->root->release_agent_path, GFP_KERNEL);  in cgroup1_release_agent()
852 	struct cgroup_root *root = cgroup_root_from_kf(kf_root);  in cgroup1_show_options()  local
857 		if (root->subsys_mask & (1 << ssid))  in cgroup1_show_options()
859 	if (root->flags & CGRP_ROOT_NOPREFIX)  in cgroup1_show_options()
861 	if (root->flags & CGRP_ROOT_XATTR)  in cgroup1_show_options()
863 	if (root->flags & CGRP_ROOT_CPUSET_V2_MODE)  in cgroup1_show_options()
867 	if (strlen(root->release_agent_path))  in cgroup1_show_options()
869 				root->release_agent_path);  in cgroup1_show_options()
872 	if (test_bit(CGRP_CPUSET_CLONE_CHILDREN, &root->cgrp.flags))  in cgroup1_show_options()
874 	if (strlen(root->name))  in cgroup1_show_options()
875 		seq_show_option(seq, "name", root->name);  in cgroup1_show_options()
1044 	struct kernfs_root *kf_root = kernfs_root_from_sb(fc->root->d_sb);  in cgroup1_reconfigure()
1045 	struct cgroup_root *root = cgroup_root_from_kf(kf_root);  in cgroup1_reconfigure()  local
1056 	if (ctx->subsys_mask != root->subsys_mask || ctx->release_agent)  in cgroup1_reconfigure()
1060 	added_mask = ctx->subsys_mask & ~root->subsys_mask;  in cgroup1_reconfigure()
1061 	removed_mask = root->subsys_mask & ~ctx->subsys_mask;  in cgroup1_reconfigure()
1064 	if ((ctx->flags ^ root->flags) ||  in cgroup1_reconfigure()
1065 	    (ctx->name && strcmp(ctx->name, root->name))) {  in cgroup1_reconfigure()
1067 		       ctx->flags, ctx->name ?: "", root->flags, root->name);  in cgroup1_reconfigure()
1073 	if (!list_empty(&root->cgrp.self.children)) {  in cgroup1_reconfigure()
1078 	ret = rebind_subsystems(root, added_mask);  in cgroup1_reconfigure()
1086 		strcpy(root->release_agent_path, ctx->release_agent);  in cgroup1_reconfigure()
1090 	trace_cgroup_remount(root);  in cgroup1_reconfigure()
1116 	struct cgroup_root *root;  in cgroup1_root_to_use()  local
1134 		    ss->root == &cgrp_dfl_root)  in cgroup1_root_to_use()
1137 		if (!percpu_ref_tryget_live(&ss->root->cgrp.self.refcnt))  in cgroup1_root_to_use()
1139 		cgroup_put(&ss->root->cgrp);  in cgroup1_root_to_use()
1142 	for_each_root(root) {  in cgroup1_root_to_use()
1145 		if (root == &cgrp_dfl_root)  in cgroup1_root_to_use()
1154 			if (strcmp(ctx->name, root->name))  in cgroup1_root_to_use()
1164 		    (ctx->subsys_mask != root->subsys_mask)) {  in cgroup1_root_to_use()
1170 		if (root->flags ^ ctx->flags)  in cgroup1_root_to_use()
1173 		ctx->root = root;  in cgroup1_root_to_use()
1189 	root = kzalloc(sizeof(*root), GFP_KERNEL);  in cgroup1_root_to_use()
1190 	if (!root)  in cgroup1_root_to_use()
1193 	ctx->root = root;  in cgroup1_root_to_use()
1196 	ret = cgroup_setup_root(root, ctx->subsys_mask);  in cgroup1_root_to_use()
1198 		cgroup_free_root(root);  in cgroup1_root_to_use()
1214 	if (!ret && !percpu_ref_tryget_live(&ctx->root->cgrp.self.refcnt))  in cgroup1_get_tree()
1222 	if (!ret && percpu_ref_is_dying(&ctx->root->cgrp.self.refcnt)) {  in cgroup1_get_tree()
1223 		struct super_block *sb = fc->root->d_sb;  in cgroup1_get_tree()
1224 		dput(fc->root);  in cgroup1_get_tree()