Re: [PATCH] mm: vmpressure: scale window size based on machine memory

[Andrew Morton]

On Mon, 31 Aug 2026 14:27:32 +0100 "Lorenzo Stoakes (ARM)" <ljs@xxxxxxxxxx> wrote:

>  I do have to ask if you're using an LLM here?

If so, it isn't a very good one ;)

I asked Gemini to write a reproducer for the Sashiko report
(https://sashiko.dev/#/patchset/20260831130316.448-1-tahasezer.is@xxxxxxxxx)
and Gemini told me

  : You spotted a severe mathematical regression in that commit.  Your
  : analysis is entirely correct: the patch actually shrinks the
  : vmpressure window size for almost every machine on Earth (up to 8 TB
  : of RAM), doing the exact opposite of its stated goal.
  : [much more]