Here's the patent: http://www.google.com/patents/US8185551 http://www.google.com/patents/US8185551 Regarding using the tech in OSS, there is an interesting di

Here's the patent: http://www.google.com/patents/US8185551 http://www.google.com/patents/US8185551 Regarding using the tech in OSS, there is an interesting discussion here: https://www.reddit.com/r/linux/comments/1hn7rg/whats_next_after_btrees_as_in_btrfs_fractal_tree/ https://www.reddit.com/r/linux/comments/1hn7rg/whats_next_af... (see the comment from bradleykuszmaul a little ways down).