The latest Reiser4 file-system release is now available and it has two advantages over the earlier code:
- Reiser4 now has support for different transaction models. Reiser4 can now change between transaction models with regard to a journalling mode, a write-anywhere / copy-on-write model, and a hybrid transaction model.
- The file-system now builds against the Linux 3.14 kernel code-base.
There's still no near-term plans to try to mainline Reiser4 within the Linux kernel so until then you need to download the kernel patch via SourceForge.