814 static struct cgroup_root *cgroup_root_from_kf(struct kernfs_root *kf_root)  in cgroup_root_from_kf()  argument
816 	struct cgroup *root_cgrp = kf_root->kn->priv;  in cgroup_root_from_kf()
891 	kernfs_destroy_root(root->kf_root);  in cgroup_destroy_root()
1265 			       struct kernfs_root *kf_root)  in cgroup_show_options()  argument
1267 	struct cgroup_root *root = cgroup_root_from_kf(kf_root);  in cgroup_show_options()
1444 static int cgroup_remount(struct kernfs_root *kf_root, int *flags, char *data)  in cgroup_remount()  argument
1447 	struct cgroup_root *root = cgroup_root_from_kf(kf_root);  in cgroup_remount()
1629 	root->kf_root = kernfs_create_root(&cgroup_kf_syscall_ops,  in cgroup_setup_root()
1632 	if (IS_ERR(root->kf_root)) {  in cgroup_setup_root()
1633 		ret = PTR_ERR(root->kf_root);  in cgroup_setup_root()
1636 	root_cgrp->kn = root->kf_root->kn;  in cgroup_setup_root()
1676 	kernfs_destroy_root(root->kf_root);  in cgroup_setup_root()
1677 	root->kf_root = NULL;  in cgroup_setup_root()
1788 		pinned_sb = kernfs_pin_sb(root->kf_root, NULL);  in cgroup_mount()
1834 	dentry = kernfs_mount(fs_type, flags, root->kf_root,  in cgroup_mount()
1853 	struct kernfs_root *kf_root = kernfs_root_from_sb(sb);  in cgroup_kill_sb()  local
1854 	struct cgroup_root *root = cgroup_root_from_kf(kf_root);  in cgroup_kill_sb()