Re: [PATCH v5] mm: Fix a hmm_range_fault() livelock / starvation problem

Lorenzo Stoakes (Oracle)
2026-04-07T10:10:14Z

On Mon, Apr 06, 2026 at 12:11:28PM -0700, Matthew Brost wrote:
> On Mon, Apr 06, 2026 at 01:56:49PM +0100, Lorenzo Stoakes (Oracle) wrote:
> > On Mon, Apr 06, 2026 at 01:54:13PM +0100, Lorenzo Stoakes (Oracle) wrote:
> > > I see John gave a tag (and he's great so that gives me confidence here),
> > > but we should really follow the procedure on this properly.
> >
> > Oh and just noticed Alastair also :) so that adds further confidence, so this is
> > really a point about cc/M signoff requirement going forwards.
>
> +1.
>
> Andrew did ACK this via DRM here [1].
>
> When we take external subsystem patches through DRM, our merge script
> requires ACKs from an external maintainer, as determined by
> get_maintainers.pl.
>
> I’m not sure what happened here, but it looks like Andrew’s ACK was lost
> on the patch, and somehow our merge tool allowed it to go in regardless.
> We will be more diligent going forward.

ACK on that... ack :), but please make sure to cc- at least the relevant
maintainers on these series going forwards also.

I realise mm has changed somewhat in its approach with this so forgiveable you
missed it :>) but - at least for me - reading mailing lists is just out due to
bandwidth limitations.

>
> Matt
>
> [1] https://patchwork.freedesktop.org/patch/703183/?series=161082&rev=3#comment_1294670
>
> >