The out-of-tree Reiser4 and Reiser5 (Reiser4 v5) patches have been updated against the recently stabilized Linux 5.5 kernel.
Main Reiser4 developer Edward Shishkin re-based the Reiser4 file-system patch against Linux 5.5.1 along with the experimental Reiser5.
At the end of 2019 is when Shishkin announced Reiser5 file-system development with introducing the concepts of local volumes capable of parallel scaling out and other key iterations over the current Reiser4 design.
