Andreas Hindborg has proposed a new Rust block driver, dubbed “rnull,” to the Linux kernel. The driver mirrors the functionality of the existing `null_blk` driver, which is primarily used for benchmarking block-layer implementations.
Like its C counterpart, “rnull” accepts all requests and quickly marks them complete with minimal processing. Hindborg shared a patch set on June 9, 2026, detailing the implementation. The patch set is titled “[email protected]”.
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