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SUPERCILEX
Alex Saveau
Compatibility notes: this release requires Rust 2024.
cpz optimizations:
- When copying files across file systems, avoid making a pointless syscall we know will fail. 4c71d2d
- Avoid making an unnecessary syscall when copying regular files with a non-zero size as we know exactly how many bytes will be copied. The non-zero size predicate is important because some regular files are weird and claim to have zero size but return data when read (e.g. files in
/sys/fs/cgroup). ed26020 - Remove some extra mkdir syscalls at the start of the copying process. 47b22bf
- Fixed a missed opportunity to use copy acceleration when copying one top-level file. rust-lang/rust#134547
- Fixed an unnecessary statx call. rust-lang/rust#134649
rmz optimizations:
- On legacy file systems that don't return a file type when iterating over a directory, don't stat the file to get its type. Instead, simply rely on the unlink syscall to tell us if we're accidentally trying to remove a directory. 5af7d26