ODEBUG_FREE_WORK_MAX
cur = READ_ONCE(pool_global.stats.cur_used) * ODEBUG_FREE_WORK_MAX;
delta = (last_used - cur_used) / ODEBUG_FREE_WORK_MAX;
max_free = min(delta, ODEBUG_FREE_WORK_MAX);
for (int cnt = 0; cnt < ODEBUG_FREE_WORK_MAX; cnt++) {