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.
Kiryl announced today his patch series based on Torvalds' code from last week for adapting the Linux kernel memory management code to read from the page cache without folio references. He explained with the patch cover letter: