Re: [PATCH v3 0/3] mm/damon: Introduce a huge page collapsing mechanism using auto tuning

[SJ Park]

On Mon, 20 Jul 2026 20:58:47 -0700 SJ Park <sj@xxxxxxxxxx> wrote:

> Hello Asier,
> 
> On Mon, 20 Jul 2026 12:01:37 +0000 <gutierrez.asier@xxxxxxxxxxxxxxxxxxx> wrote:
> 
> > From: Asier Gutierrez <gutierrez.asier@xxxxxxxxxxxxxxxxxxx>
> > 
> > Overview
> > ========
> > This patch set introduces a new autotuning which allows to collapse
> > hot regions into hugepages.
> 
> Thank you for making this series well done like this!
> 
> [...]
> > Patches Sequence
> > ================
> > Patch 1 -> Introduce DAMOS_QUOTA_HUGEPAGE_MEM_BP and autotuning
> > Patch 2 -> sysfs support for the new quota goal
> > Patch 3 -> Document hugepage_mem_bp parameter
> 
> I'd prefer handling 'total' underflow and returning 10,000 instead of INT_MAX
> from damos_hugepage_mem_bp() corner cases.  But definitely that is no blocker.
> For the series,
> 
> Reviewed-by: SJ Park <sj@xxxxxxxxxx>
> 
> This series is applied to damon/next [1] tree.  If this series is not added to
> mm.git in short term (~3 days?), I will ask mm.git maintainer (Andrew Morton)
> to pick this.  In the case, I will update patch 1 to do what I mentioned as
> preferred change if you don't mind.  So, no action from your side is needed for
> now.  If it seems I also forgot doing that or you cannot wait for my action,
> please feel free to directly ask that to Andrew.

We (mm community) now want to focus on making mm.git more stabilized and
therefore ready for the next merge window, rather than adding more changes that
are not really urgent.  I agree and want to help [1] that.  For the reason,
unless Andre pick this first, I will request adding this to mm.git only after
next -rc1 release.  Let me know if you think this is really urgent.

[1] https://lore.kernel.org/20260722133829.87607-1-sj@xxxxxxxxxx


Thanks,
SJ

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