Linus Torvalds uses Claude Code to write Linux kernel patches

Linus Torvalds says he wrote a set of Linux kernel patches largely with Anthropic's Claude Code, under his direction. The patches address a page cache contention problem that slows multi-threaded small reads.

In one test on his laptop, eight-thread throughput rose from about 10 million to 30–33 million reads per second, though the branch is not yet merged into mainline and memory reclamation issues remain unresolved.