Linus Torvalds's first LLM-assisted patch series

, and then using that RCU delay it does not just the folio lookup itself under RCU (which we've done forever), but also the actual folio data accesses themselves under RCU. No refcount taking needed for the fastpath where we can just read the data from the folio entirely in an RCU-protected region when the user copy doesn't cause page faults.

The end result is an order-of-magnitude speedup for a read()-heavy benchmark. Review has already <a href=