Re: [RFC PATCH] mm/rmap: use release ordering for small-folio mapcount removal

[Pranith Kumar]

Hi David,

Thank you for looking at the patch.

On Wed, Nov 4, 2026 at 1:16 AM David Hildenbrand (Arm) <david@xxxxxxxxxx> wrote:
>
>
> > In an arm64 page map/unmap microbenchmark with 20,480 minor
> > faults, simulated cycles fell by 1.54%.
>
> Thanks for the patch.
>
> While I see value, I am not convinced this is the right time for this
> micro-optimization while we are busy with other things.
>
> This needs a better evaluation: 1.54% in a micro-benchmark without knowing the
> stddev isn't particularly helpful.
>

This result is from a deterministic simulation, hence no stddev.

-- 
Pranith