Linus Torvalds' AI Code Improved: Huge Performance Wins With Reworked Code

Last week I wrote about Linus Torvalds leveraging AI to come up with a hefty Linux kernel improvement using Claude Code. The code is for reading from the page cache without folio references to help workloads of small reads from a single file across many CPU threads. Meta engineer Kiryl Shutsemau has taken that code and reworked it and showing extremely promising performance results...

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