I use BTRFS, ZFS and BCACHEFS --> Recompiling ZFS for LATEST kernels is sometimes tricky. --> BTRFS and BCACHEFS are integral components of the kernel, hence their usage in combination with recompiling LATEST kernels is really a charm.

And now ... BCACHEFS (like ZFS) is as well externalized, likely. --> I'm just shocked. --> And I still hope that all goes Best and BCACHEFS keeps staying in kernel.