介绍了嵌入式linux根文件系统的制作，报考ramdisk，cramfs,yaffs,以及nfs的配置-Introduced the embedded linux root file system of production, applying ramdisk, cramfs, yaffs, as well as the configuration of nfs

这个代码的功能是linux下根文件系统的制作.-This code function is linux root file system production.