Which is the correct dm-cache version

I am trying to install dm-cache on my CentOS machine. Which dm-cache version should I use. I read on wikipedia as below: > Another dm-cache project with similar goals was announced by Eric Van > Hensbergen and Ming Zhao in 2006, as the result of an internship work > at IBM. > > Later, Joe Thornber, Heinz Mauelshagen and Mike Snitzer provided their > own implementation of the concept, which resulted in the inclusion of > dm-cache into the Linux kernel. dm-cache was merged into the Linux > kernel mainline in kernel version 3.9, which was released on April 28, > 2013. dm-cache is integrated in the mainline of linux kernel. And also dm-cache was written by Joe Thornber, Heinz Mauelshagen and Mike Snitzer and another was written by Eric Van Hensbergen and Ming Zhao, so which one should I use, are both the same, both the version differ in the way it has to be setup. Has any one tried to use both the versions?