636 	struct cgroup *cgrp = of->kn->parent->priv;  in of_css()
1591 void cgroup_kn_unlock(struct kernfs_node *kn)  in cgroup_kn_unlock()  argument
1595 	if (kernfs_type(kn) == KERNFS_DIR)  in cgroup_kn_unlock()
1596 		cgrp = kn->priv;  in cgroup_kn_unlock()
1598 		cgrp = kn->parent->priv;  in cgroup_kn_unlock()
1602 	kernfs_unbreak_active_protection(kn);  in cgroup_kn_unlock()
1623 struct cgroup *cgroup_kn_lock_live(struct kernfs_node *kn, bool drain_offline)  in cgroup_kn_lock_live()  argument
1627 	if (kernfs_type(kn) == KERNFS_DIR)  in cgroup_kn_lock_live()
1628 		cgrp = kn->priv;  in cgroup_kn_lock_live()
1630 		cgrp = kn->parent->priv;  in cgroup_kn_lock_live()
1640 	kernfs_break_active_protection(kn);  in cgroup_kn_lock_live()
1650 	cgroup_kn_unlock(kn);  in cgroup_kn_lock_live()
1665 		cfile->kn = NULL;  in cgroup_rm_file()
1671 	kernfs_remove_by_name(cgrp->kn, cgroup_file_name(cgrp, cft, name));  in cgroup_rm_file()
1869 	kernfs_activate(dcgrp->kn);  in rebind_subsystems()
1887 	len = kernfs_path_from_node(kf_node, ns_cgroup->kn, buf, PATH_MAX);  in cgroup_show_path()
2074 	root_cgrp->kn = kernfs_root_to_node(root->kf_root);  in cgroup_setup_root()
2164 		nsdentry = kernfs_node_dentry(cgrp->kn, sb);  in cgroup_do_get_tree()
2337 	return kernfs_path_from_node(cgrp->kn, root->kn, buf, buflen);  in cgroup_path_ns_locked()
3376 	cgrp = cgroup_kn_lock_live(of->kn, true);  in cgroup_subtree_control_write()
3427 	kernfs_activate(cgrp->kn);  in cgroup_subtree_control_write()
3429 	cgroup_kn_unlock(of->kn);  in cgroup_subtree_control_write()
3516 	cgrp = cgroup_kn_lock_live(of->kn, true);  in cgroup_type_write()
3523 	cgroup_kn_unlock(of->kn);  in cgroup_type_write()
3559 	cgrp = cgroup_kn_lock_live(of->kn, false);  in cgroup_max_descendants_write()
3565 	cgroup_kn_unlock(of->kn);  in cgroup_max_descendants_write()
3602 	cgrp = cgroup_kn_lock_live(of->kn, false);  in cgroup_max_depth_write()
3608 	cgroup_kn_unlock(of->kn);  in cgroup_max_depth_write()
3750 	cgrp = cgroup_kn_lock_live(of->kn, false);  in pressure_write()
3755 	cgroup_kn_unlock(of->kn);  in pressure_write()
3840 	cgrp = cgroup_kn_lock_live(of->kn, false);  in cgroup_pressure_write()
3857 	cgroup_kn_unlock(of->kn);  in cgroup_pressure_write()
3916 	cgrp = cgroup_kn_lock_live(of->kn, false);  in cgroup_freeze_write()
3922 	cgroup_kn_unlock(of->kn);  in cgroup_freeze_write()
3982 	cgrp = cgroup_kn_lock_live(of->kn, false);  in cgroup_kill_write()
3996 	cgroup_kn_unlock(of->kn);  in cgroup_kill_write()
4041 	struct cgroup *cgrp = of->kn->parent->priv;  in cgroup_file_write()
4155 static int cgroup_kn_set_ugid(struct kernfs_node *kn)  in cgroup_kn_set_ugid()  argument
4165 	return kernfs_setattr(kn, &iattr);  in cgroup_kn_set_ugid()
4178 	struct kernfs_node *kn;  in cgroup_add_file()  local
4185 	kn = __kernfs_create_file(cgrp->kn, cgroup_file_name(cgrp, cft, name),  in cgroup_add_file()
4190 	if (IS_ERR(kn))  in cgroup_add_file()
4191 		return PTR_ERR(kn);  in cgroup_add_file()
4193 	ret = cgroup_kn_set_ugid(kn);  in cgroup_add_file()
4195 		kernfs_remove(kn);  in cgroup_add_file()
4205 		cfile->kn = kn;  in cgroup_add_file()
4282 		kernfs_activate(root->kn);  in cgroup_apply_cftypes()
4464 	if (cfile->kn) {  in cgroup_file_notify()
4471 			kernfs_notify(cfile->kn);  in cgroup_file_notify()
4485 	struct kernfs_node *kn;  in cgroup_file_show()  local
4488 	kn = cfile->kn;  in cgroup_file_show()
4489 	kernfs_get(kn);  in cgroup_file_show()
4492 	if (kn)  in cgroup_file_show()
4493 		kernfs_show(kn, show);  in cgroup_file_show()
4495 	kernfs_put(kn);  in cgroup_file_show()
5061 	inode = kernfs_get_inode(sb, cgrp->procs_file.kn);  in cgroup_may_write()
5132 	dst_cgrp = cgroup_kn_lock_live(of->kn, false);  in __cgroup_procs_write()
5164 	cgroup_kn_unlock(of->kn);  in __cgroup_procs_write()
5367 			kernfs_put(cgrp->kn);  in css_free_rwork_fn()
5425 		if (cgrp->kn)  in css_release_work_fn()
5426 			RCU_INIT_POINTER(*(void __rcu __force **)&cgrp->kn->priv,  in css_release_work_fn()
5577 	struct kernfs_node *kn;  in cgroup_create()  local
5595 	kn = kernfs_create_dir(parent->kn, name, mode, cgrp);  in cgroup_create()
5596 	if (IS_ERR(kn)) {  in cgroup_create()
5597 		ret = PTR_ERR(kn);  in cgroup_create()
5600 	cgrp->kn = kn;  in cgroup_create()
5677 	kernfs_remove(cgrp->kn);  in cgroup_create()
5738 	kernfs_get(cgrp->kn);  in cgroup_mkdir()
5740 	ret = cgroup_kn_set_ugid(cgrp->kn);  in cgroup_mkdir()
5755 	kernfs_activate(cgrp->kn);  in cgroup_mkdir()
5912 	kernfs_remove(cgrp->kn);  in cgroup_destroy_locked()
5940 int cgroup_rmdir(struct kernfs_node *kn)  in cgroup_rmdir()  argument
5945 	cgrp = cgroup_kn_lock_live(kn, false);  in cgroup_rmdir()
5953 	cgroup_kn_unlock(kn);  in cgroup_rmdir()
6176 	struct kernfs_node *kn;  in cgroup_path_from_kernfs_id()  local
6178 	kn = kernfs_find_and_get_node_by_id(cgrp_dfl_root.kf_root, id);  in cgroup_path_from_kernfs_id()
6179 	if (!kn)  in cgroup_path_from_kernfs_id()
6181 	kernfs_path(kn, buf, buflen);  in cgroup_path_from_kernfs_id()
6182 	kernfs_put(kn);  in cgroup_path_from_kernfs_id()
6193 	struct kernfs_node *kn;  in cgroup_get_from_id()  local
6196 	kn = kernfs_find_and_get_node_by_id(cgrp_dfl_root.kf_root, id);  in cgroup_get_from_id()
6197 	if (!kn)  in cgroup_get_from_id()
6200 	if (kernfs_type(kn) != KERNFS_DIR) {  in cgroup_get_from_id()
6201 		kernfs_put(kn);  in cgroup_get_from_id()
6207 	cgrp = rcu_dereference(*(void __rcu __force **)&kn->priv);  in cgroup_get_from_id()
6212 	kernfs_put(kn);  in cgroup_get_from_id()
6767 	struct kernfs_node *kn = kernfs_node_from_dentry(dentry);  in css_tryget_online_from_dir()  local
6774 	    !kn || kernfs_type(kn) != KERNFS_DIR)  in css_tryget_online_from_dir()
6784 	cgrp = rcu_dereference(*(void __rcu __force **)&kn->priv);  in css_tryget_online_from_dir()
6820 	struct kernfs_node *kn;  in cgroup_get_from_path()  local
6825 	kn = kernfs_walk_and_get(root_cgrp->kn, path);  in cgroup_get_from_path()
6826 	if (!kn)  in cgroup_get_from_path()
6829 	if (kernfs_type(kn) != KERNFS_DIR) {  in cgroup_get_from_path()
6836 	cgrp = rcu_dereference(*(void __rcu __force **)&kn->priv);  in cgroup_get_from_path()
6843 	kernfs_put(kn);  in cgroup_get_from_path()