2758 	int id, size;  in memcg_alloc_cache_id()  local
2761 	id = ida_simple_get(&memcg_cache_ida,  in memcg_alloc_cache_id()
2763 	if (id < 0)  in memcg_alloc_cache_id()
2764 		return id;  in memcg_alloc_cache_id()
2766 	if (id < memcg_nr_cache_ids)  in memcg_alloc_cache_id()
2767 		return id;  in memcg_alloc_cache_id()
2775 	size = 2 * (id + 1);  in memcg_alloc_cache_id()
2790 		ida_simple_remove(&memcg_cache_ida, id);  in memcg_alloc_cache_id()
2793 	return id;  in memcg_alloc_cache_id()
2796 static void memcg_free_cache_id(int id)  in memcg_free_cache_id()  argument
2798 	ida_simple_remove(&memcg_cache_ida, id);  in memcg_free_cache_id()
4453 		if (frn->bdi_id == wb->bdi->id &&  in mem_cgroup_track_foreign_dirty_slowpath()
4454 		    frn->memcg_id == wb->memcg_css->id)  in mem_cgroup_track_foreign_dirty_slowpath()
4480 		frn->bdi_id = wb->bdi->id;  in mem_cgroup_track_foreign_dirty_slowpath()
4481 		frn->memcg_id = wb->memcg_css->id;  in mem_cgroup_track_foreign_dirty_slowpath()
4913 	if (memcg->id.id > 0) {  in mem_cgroup_id_remove()
4914 		idr_remove(&mem_cgroup_idr, memcg->id.id);  in mem_cgroup_id_remove()
4915 		memcg->id.id = 0;  in mem_cgroup_id_remove()
4921 	refcount_add(n, &memcg->id.ref);  in mem_cgroup_id_get_many()
4926 	if (refcount_sub_and_test(n, &memcg->id.ref)) {  in mem_cgroup_id_put_many()
4945 struct mem_cgroup *mem_cgroup_from_id(unsigned short id)  in mem_cgroup_from_id()  argument
4948 	return idr_find(&mem_cgroup_idr, id);  in mem_cgroup_from_id()
5040 	memcg->id.id = idr_alloc(&mem_cgroup_idr, NULL,  in mem_cgroup_alloc()
5043 	if (memcg->id.id < 0)  in mem_cgroup_alloc()
5084 	idr_replace(&mem_cgroup_idr, memcg, memcg->id.id);  in mem_cgroup_alloc()
5169 	refcount_set(&memcg->id.ref, 1);  in mem_cgroup_css_online()
6481 			unsigned short id = lookup_swap_cgroup_id(ent);  in mem_cgroup_try_charge()  local
6484 			memcg = mem_cgroup_from_id(id);  in mem_cgroup_try_charge()
6962 	while (!refcount_inc_not_zero(&memcg->id.ref)) {  in mem_cgroup_id_get_online()
7102 	unsigned short id;  in mem_cgroup_uncharge_swap()  local
7107 	id = swap_cgroup_record(entry, 0, nr_pages);  in mem_cgroup_uncharge_swap()
7109 	memcg = mem_cgroup_from_id(id);  in mem_cgroup_uncharge_swap()