[$] The "rnull" Rust block driver
The null block driver ( null_blk ) is a small driver that is mostly useful for benchmarking block-layer implementations. It accepts all requests and marks them complete as quickly as possible, doing as little work as possible. In June 2026, Andreas Hindborg shared a patch set implementing the same functionality in Rust, in order to show that a simple block driver is now possible to write using…
We haven't written up this one. LWN has the full story — the link below goes straight to it.
