FlashCache - a general purpose writeback block cache for Linux

How is this different to the project it is based on, dm-cache[1][2]?

Briefly skimming the documentation it seems that the first difference is the eviction policy: LRU in dm-cache vs FIFO in FlashCache (although LRU is an option).

Anyone know what prompted the name change and code fork?

[1] http://github.com/mingzhao/dm-cache [2] http://users.cis.fiu.edu/~zhaom/dmcache/index.html