Need aufs or other union filesystem with android on beaglebone black

Hi, is there support of a union filesystem like aufs for android? It seems that there is a lot of stuff available for ubuntu and other distributions but nothing for android. I am wondering because my expection was the filesystem to be something kernel dependant. Is there a kernel configuration switch that i miss? How do I get aufs available on my beaglebone black running android?


The kernel of cyanogenmod 6.0 has a aufs.ko modlule. but the later version cut out this function.