208 	int id, ret = -ENOMEM;  in prealloc_memcg_shrinker()  local
212 	id = idr_alloc(&shrinker_idr, SHRINKER_REGISTERING, 0, 0, GFP_KERNEL);  in prealloc_memcg_shrinker()
213 	if (id < 0)  in prealloc_memcg_shrinker()
216 	if (id >= shrinker_nr_max) {  in prealloc_memcg_shrinker()
217 		if (memcg_expand_shrinker_maps(id)) {  in prealloc_memcg_shrinker()
218 			idr_remove(&shrinker_idr, id);  in prealloc_memcg_shrinker()
222 		shrinker_nr_max = id + 1;  in prealloc_memcg_shrinker()
224 	shrinker->id = id;  in prealloc_memcg_shrinker()
233 	int id = shrinker->id;  in unregister_memcg_shrinker()  local
235 	BUG_ON(id < 0);  in unregister_memcg_shrinker()
238 	idr_remove(&shrinker_idr, id);  in unregister_memcg_shrinker()
427 		idr_replace(&shrinker_idr, shrinker, shrinker->id);  in register_shrinker_prepared()