Linus Torvalds used Claude Code to build a Linux page cache fix that hit 23x read throughput, but kernel reviewers found a race before anything merged.
Torvalds had spent 18 months running a broken version of his own fix for the page-cache reference-counting bottleneck, while other developers had encountered problems with their approaches.
The article mentions he had been working on solving the issue for 18 months already… so at least that long.
Wonder how much time it had taken without AI
The article mentions he had been working on solving the issue for 18 months already… so at least that long.