Re: [PATCH v2 00/16] mm: remove is_swap_[pte, pmd]() + non-swap entries, introduce leaf entries

Andrew Morton
2025-11-11T00:23:16Z

On Mon, 10 Nov 2025 15:38:55 -0800 (PST) Hugh Dickins <hughd@google.com> wrote:

> > I'm sorry but this is not a reasonable request. I am being as empathetic and
> > kind as I can be here, but this series is proceeding without arbitrary delay.
> >
> > I will do everything I can to accommodate any concerns or issues you may have
> > here _within reason_ :)
>
> But Lorenzo, have you even tested your series properly yet, with
> swapping and folio migration and huge pages and tmpfs under load?
> Please do.
>
> I haven't had time to bisect yet, maybe there's nothing more needed
> than a one-liner fix somewhere; but from my experience it is not yet
> ready for inclusion in mm and next - it stops testing other folks' work.
>
> I haven't tried today's v3, but from the cover letter of differences,
> it didn't look like much of importance is fixed since v2: which
> (after a profusion of "Bad swap offet entry 3ffffffffffff" messages,
> not seen with v1, and probably not really serious) soon hits an Oops
> or a BUG or something (as v1 did) - I don't have any logs or notes
> to give yet, just forewarning before pursuing later in the day.
>
> If you think v3 has fixed real crashes under load, please say so:
> otherwise, I doubt it's worth Andrew hurrying to replace v2 by v3.

Oh. Thanks. I'll move the v3 series into mm-new for now.