Linus Torvalds's first LLM-assisted patch series

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Linus Torvalds's first LLM-assisted patch series

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[Posted October 14, 2026 by corbet]

At the lately concluded Maintainers Summit, Linus Torvalds stated that he had been using a ample language model to activity on a place sequence addressing a longstanding problem; he has now posted that sequence for review.
The fairly abbreviated sequence of ten patches basically enhances folio lookup by noticing whenever folios are hot, and environment a "delay releasing this folio until following a RCU period", and afterward using that RCU postpone it does not fair the folio lookup itself under RCU (which we've done forever), but additionally the genuine folio data accesses themselves under RCU. No refcount taking needed for the fastpath where we can fair peruse the data from the folio entirely in an RCU-protected area whenever the person copy doesn't logic leaf faults.

The end outcome is an order-of-magnitude speedup for a read()-heavy benchmark. Review has already identified a race condition in the code, though, so additional activity volition be needed.


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