linux-kernel - Re: [PATCH v11 00/15] khugepaged: mTHP support

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Message-ID: <db2f6a72-747e-4fae-ada9-b717ed033f13@lucifer.local>
Date: Mon, 15 Sep 2025 11:46:00 +0100
From: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
To: David Hildenbrand <david@...hat.com>
Cc: Kiryl Shutsemau <kas@...nel.org>, Nico Pache <npache@...hat.com>,
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Subject: Re: [PATCH v11 00/15] khugepaged: mTHP support

On Mon, Sep 15, 2025 at 12:37:28PM +0200, David Hildenbrand wrote:
> On 15.09.25 12:32, Lorenzo Stoakes wrote:
> > On Mon, Sep 15, 2025 at 12:25:54PM +0200, David Hildenbrand wrote:
> > > > >
> > > > > I would just say "The kernel might decide to use a more conservative approach
> > > > > when collapsing smaller THPs" etc.
> > > > >
> > > > >
> > > > > Thoughts?
> > > >
> > > > Well I've sort of reviewed oppositely there :) well at least that it needs to be
> > > > a hell of a lot clearer (I find that comment really compressed and I just don't
> > > > really understand it).
> > >
> > > Right. I think these are just details we should hide from the user. And in
> > > particular, not over-document it so we can more easily change semantics
> > > later.
> >
> > And when we change semantics we can't change comments?
> >
> > I mean maybe we're talking across purposes here, I'm talking about code
> > comments, not the documentation.
> >
> > I agree the documentation should not mention any of this.
>
> Yes, I was talking about patch #15 ("It's just when it comes to documenting
> all that stuff in patch #15").
>
> Comments we can adjust as we please of course :)

Yeah, ok this was just a misunderstanding then! :) We are in agreement.

>
> --
> Cheers
>
> David / dhildenb
>

Cheers, Lorenzo