Is this the same "zstd" compression used in Fedora's btrfs transparent block level compression? I have been thoroughly impressed with it in Fedora 34. If that's true, I had no idea that it was a Facebook project. Color me shocked.
> In June 2012, Chris Mason left Oracle for Fusion-io, which he left a year later with Josef Bacik to join Facebook. While at both companies, Mason continued his work on Btrfs.[27][17]
