Based on the single buffer copy technology, the strategy overcomes the inefficiency of storage blockcopy in some embedded system's memory control unit.
该策略基于缓冲区单次拷贝技术,克服了有些嵌入式系统存储控制器低效的存储块拷贝。
2
This function returns zero on success. In general, the get_user and put_user functions are faster than their blockcopy counterparts and should be used if small types are moved.