基于LINUX下开发的块设备驱动程序源代码，能为初学者提供很好的参考作用，该程序使用一小块内存模拟块设备实现块设备的读写操作-Developed under the LINUX-based block device driver source code, can provide a good reference for beginners role, the process simulation using a small memory block devices to read and wri