1246 	if (!mem_cgroup_is_root(last))  in invalidate_reclaim_iterators()
1270 	BUG_ON(mem_cgroup_is_root(memcg));  in mem_cgroup_scan_tasks()
1298 		VM_BUG_ON_FOLIO(!mem_cgroup_is_root(lruvec_memcg(lruvec)), folio);  in lruvec_memcg_debug()
2059 	if (mem_cgroup_is_root(memcg))  in mem_cgroup_get_oom_group()
2404 		 !mem_cgroup_is_root(memcg));  in reclaim_high()
2497 		 !mem_cgroup_is_root(memcg));  in mem_find_max_overage()
2513 		 !mem_cgroup_is_root(memcg));  in swap_find_max_overage()
2830 	if (mem_cgroup_is_root(memcg))  in try_charge()
2838 	if (mem_cgroup_is_root(memcg))  in cancel_charge()
3008 	for (; !mem_cgroup_is_root(memcg); memcg = parent_mem_cgroup(memcg)) {  in __get_obj_cgroup_from_memcg()
3640 	if (mem_cgroup_is_root(memcg))  in mem_cgroup_force_empty_write()
3668 	if (mem_cgroup_is_root(memcg)) {  in mem_cgroup_usage()
3755 	if (unlikely(mem_cgroup_is_root(memcg)))  in memcg_online_kmem()
3779 	if (unlikely(mem_cgroup_is_root(memcg)))  in memcg_offline_kmem()
3859 		if (mem_cgroup_is_root(memcg)) { /* Can't set limit on root */  in mem_cgroup_write()
4191 	if (!mem_cgroup_is_root(memcg))  in mem_cgroup_swappiness_write()
4541 	if (mem_cgroup_is_root(memcg) || !((val == 0) || (val == 1)))  in mem_cgroup_oom_control_write()
5413 	if (unlikely(mem_cgroup_is_root(memcg)))  in mem_cgroup_css_online()
6093 		if (!mem_cgroup_is_root(mc.from))  in __mem_cgroup_clear_mc()
6102 		if (!mem_cgroup_is_root(mc.to))  in __mem_cgroup_clear_mc()
7176 		if (!mem_cgroup_is_root(memcg))  in uncharge_folio()
7252 	if (!mem_cgroup_is_root(memcg)) {  in mem_cgroup_migrate()
7283 	if (mem_cgroup_is_root(memcg))  in mem_cgroup_sk_alloc()
7419 		if (WARN_ON_ONCE(mem_cgroup_is_root(memcg))) {  in mem_cgroup_id_get_online()
7475 	if (!mem_cgroup_is_root(memcg))  in mem_cgroup_swapout()
7479 		if (!mem_cgroup_is_root(swap_memcg))  in mem_cgroup_swapout()
7530 	if (!mem_cgroup_is_root(memcg) &&  in __mem_cgroup_try_charge_swap()
7562 		if (!mem_cgroup_is_root(memcg)) {  in __mem_cgroup_uncharge_swap()
7580 	for (; !mem_cgroup_is_root(memcg); memcg = parent_mem_cgroup(memcg))  in mem_cgroup_get_nr_swap_pages()
7602 	for (; !mem_cgroup_is_root(memcg); memcg = parent_mem_cgroup(memcg)) {  in mem_cgroup_swap_full()
7779 	for (memcg = original_memcg; !mem_cgroup_is_root(memcg);  in obj_cgroup_may_zswap()