one stack location for each of the drivers that will process the IRP and sometimes one more stack location for the use of the originator of the IRP. (See Figure 5-3.

• 数组中的每个堆栈单元都对应一个将处理该IRP的驱动程序，另外还有一个堆栈单元供IRP的创建者使用(见图5-3)。