Memoize filesystem operations during unpack#5
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## Summary I shipped one security fix here along with several significant performance improvements for large TAR files: - astral-sh/tokio-tar#2 - astral-sh/tokio-tar#4 - astral-sh/tokio-tar#5 I also PR'd the security fix to `edera-dev` (edera-dev/tokio-tar#4).
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Summary
The
dstis the same throughout the life of the unpack, and we canonicalize it before unpacking. So we can avoid re-validating and re-canonicalizing for every single archive entry.For a large PyTorch wheel, this improves performance by about 12.5%.