if (atomic_dec_and_test(&pool->pool_refcount)) {
LASSERT(list_empty(&pool->pool_list));
LASSERT(pool->pool_proc_entry == NULL);
if (atomic_dec_and_test(&pool->pool_refcount)) {
LASSERT(list_empty(&pool->pool_list));
LASSERT(pool->pool_proc_entry == NULL);