cb_arg
struct list_lru_one *list, void *cb_arg);
list_lru_walk_cb isolate, void *cb_arg,
list_lru_walk_cb isolate, void *cb_arg,
list_lru_walk_cb isolate, void *cb_arg,
return list_lru_walk_one(lru, sc->nid, sc->memcg, isolate, cb_arg,
return list_lru_walk_one_irq(lru, sc->nid, sc->memcg, isolate, cb_arg,
void *cb_arg, unsigned long nr_to_walk)
cb_arg, &nr_to_walk);