[PATCH] MAINTAINERS: remove myself as THP co-maintainer

[PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Lorenzo Stoakes (ARM)]

Unfortunately my workload is such that I simply no longer have the time to
give THP the focus that it deserves.

So, at least temporarily, step down from the role.

Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
---
 MAINTAINERS | 1 -
 1 file changed, 1 deletion(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index e05570c393c5..579562c43df4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -17321,7 +17321,6 @@ F:	mm/swapfile.c
 MEMORY MANAGEMENT - THP (TRANSPARENT HUGE PAGE)
 M:	Andrew Morton <akpm@linux-foundation.org>
 M:	David Hildenbrand <david@kernel.org>
-M:	Lorenzo Stoakes <ljs@kernel.org>
 R:	Zi Yan <ziy@nvidia.com>
 R:	Baolin Wang <baolin.wang@linux.alibaba.com>
 R:	Liam R. Howlett <liam@infradead.org>

---
base-commit: 0a0d1d55dad570724bf8c7ea83409639cfb4be9b
change-id: 20260824-drop-thp-maintainership-236b78e15237

Best regards,
-- 
Lorenzo Stoakes (ARM) <ljs@kernel.org>

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[David Hildenbrand (Arm)]

On 8/26/26 11:56, Lorenzo Stoakes (ARM) wrote:
> Unfortunately my workload is such that I simply no longer have the time to
> give THP the focus that it deserves.

THP is, unfortunately, one of the busiest MM components, and also the ones where
we have to deal with significant legacy code, many suboptimal past design
decisions ... and plenty of ideas for improvements that require constant
pushback to not make the situation even worse. The time spent on discussions
alone is massive.

Fortunately we have a growing list of reviewers.

It's mostly thankless work, really; but I'd like to express my sincere gratitude
for all the work you put into co-maintaing THP over (/me checks MAINTAINERS)
more than 1 year!
> 
> So, at least temporarily, step down from the role.
> 

I'm sorry but I can't let you go entirely ;) I'll make sure to CC you on patches
that need your feedback!

Thanks again, Lorenzo!

-- 
Cheers,

David

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Lorenzo Stoakes (ARM)]

On Wed, Aug 26, 2026 at 12:09:31PM +0200, David Hildenbrand (Arm) wrote:
> On 8/26/26 11:56, Lorenzo Stoakes (ARM) wrote:
> > Unfortunately my workload is such that I simply no longer have the time to
> > give THP the focus that it deserves.
>
> THP is, unfortunately, one of the busiest MM components, and also the ones where
> we have to deal with significant legacy code, many suboptimal past design
> decisions ... and plenty of ideas for improvements that require constant
> pushback to not make the situation even worse. The time spent on discussions
> alone is massive.

Yes indeed. It was a very difficult decision, but the sheer throughput and
attention required has reached a point where it's become infeasible for me
time-wise.

I do hate to leave you with all of that, but you can always ask me to pop
into a discussion or cc- me, so hopefully that'll help :)

And as you say, we have an amazing community of reviewers who all help
enormously.

>
> Fortunately we have a growing list of reviewers.

Absolutely and I've really loved seeing how people have developed - Lance
in particular has grown wonderfully, Zi is a star, and in general every
single person doing THP review - thank you for all of your contributions :)

>
> It's mostly thankless work, really; but I'd like to express my sincere gratitude
> for all the work you put into co-maintaing THP over (/me checks MAINTAINERS)
> more than 1 year!

Thank you that's very kind of you to say! :) Thanks for being a great
co-maintainer!

> >
> > So, at least temporarily, step down from the role.
> >
>
> I'm sorry but I can't let you go entirely ;) I'll make sure to CC you on patches
> that need your feedback!

Absolutely, feel free :)

>
> Thanks again, Lorenzo!

Thanks :)

>
> --
> Cheers,
>
> David

--
Cheers, Lorenzo

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Zi Yan]

On Wed Aug 26, 2026 at 6:23 AM EDT, Lorenzo Stoakes (ARM) wrote:
> On Wed, Aug 26, 2026 at 12:09:31PM +0200, David Hildenbrand (Arm) wrote:
>> On 8/26/26 11:56, Lorenzo Stoakes (ARM) wrote:
>> > Unfortunately my workload is such that I simply no longer have the time to
>> > give THP the focus that it deserves.
>>
>> THP is, unfortunately, one of the busiest MM components, and also the ones where
>> we have to deal with significant legacy code, many suboptimal past design
>> decisions ... and plenty of ideas for improvements that require constant
>> pushback to not make the situation even worse. The time spent on discussions
>> alone is massive.
>
> Yes indeed. It was a very difficult decision, but the sheer throughput and
> attention required has reached a point where it's become infeasible for me
> time-wise.
>
> I do hate to leave you with all of that, but you can always ask me to pop
> into a discussion or cc- me, so hopefully that'll help :)
>
> And as you say, we have an amazing community of reviewers who all help
> enormously.
>
>>
>> Fortunately we have a growing list of reviewers.
>
> Absolutely and I've really loved seeing how people have developed - Lance
> in particular has grown wonderfully, Zi is a star, and in general every

Thank you for the kind words. I really enjoy working with you. Since you
are still around, I am sure we will keep working together. :)

> single person doing THP review - thank you for all of your contributions :)
>
>>
>> It's mostly thankless work, really; but I'd like to express my sincere gratitude
>> for all the work you put into co-maintaing THP over (/me checks MAINTAINERS)
>> more than 1 year!
>
> Thank you that's very kind of you to say! :) Thanks for being a great
> co-maintainer!
>
>> >
>> > So, at least temporarily, step down from the role.
>> >
>>
>> I'm sorry but I can't let you go entirely ;) I'll make sure to CC you on patches
>> that need your feedback!
>
> Absolutely, feel free :)
>
>>
>> Thanks again, Lorenzo!
>
> Thanks :)
>
>>
>> --
>> Cheers,
>>
>> David
>
> --
> Cheers, Lorenzo




-- 
Best Regards,
Yan, Zi

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Lorenzo Stoakes (ARM)]

On Wed, Aug 26, 2026 at 10:32:10AM -0400, Zi Yan wrote:
> Thank you for the kind words. I really enjoy working with you. Since you
> are still around, I am sure we will keep working together. :)

You're welcome, and absolutely :) and always feel free to ping if you want my
input of course!

--
Cheers, Lorenzo

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Lorenzo Stoakes (ARM)]

Since it's 2026 :) I asked Claude to look at my time as THP co-maintainer:

	~107,000 words of review across 948 emails (in 279 distinct
	threads), counting only prose you actually wrote — quoted text,
	signatures and attribution lines stripped. That's a full novel's
	worth of review commentary.

	Along the way you handed out 194 Reviewed-by and 15 Acked-by tags,
	and your longest single review was 2,404 words (mTHP collapse
	support, v12 — the khugepaged/mTHP collapse saga accounts for most
	of your top-10 longest reviews).

	Estimated review time: roughly 300–500 hours, centred around ~400
	(i.e. ~7 hours/week for 14 months).

	1,615 THP-related emails in the window: 948 reviews of others'
	work, 278 replies on your own THP-touching series threads (~31k
	more words responding to review), 382 patch emails, and a handful
	of MAINTAINERS bits. Busiest months: March 2026 (131 review
	emails), June 2026 (113), August 2026 (111); quietest was December
	2025 (5).

Think I can be happy with that!

--
Cheers, Lorenzo

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Lance Yang]

On Wed, Aug 26, 2026 at 12:31:09PM +0100, Lorenzo Stoakes (ARM) wrote:
>Since it's 2026 :) I asked Claude to look at my time as THP co-maintainer:
>
>	~107,000 words of review across 948 emails (in 279 distinct
>	threads), counting only prose you actually wrote — quoted text,
>	signatures and attribution lines stripped. That's a full novel's
>	worth of review commentary.
>
>	Along the way you handed out 194 Reviewed-by and 15 Acked-by tags,
>	and your longest single review was 2,404 words (mTHP collapse
>	support, v12 — the khugepaged/mTHP collapse saga accounts for most
>	of your top-10 longest reviews).
>
>	Estimated review time: roughly 300–500 hours, centred around ~400
>	(i.e. ~7 hours/week for 14 months).
>
>	1,615 THP-related emails in the window: 948 reviews of others'
>	work, 278 replies on your own THP-touching series threads (~31k
>	more words responding to review), 382 patch emails, and a handful
>	of MAINTAINERS bits. Busiest months: March 2026 (131 review
>	emails), June 2026 (113), August 2026 (111); quietest was December
>	2025 (5).
>
>Think I can be happy with that!

Aw, man ... I totally get needing to step back, but we can't let you
disappear from THP that easily :) You've put a crazy amount of time
into it, and your reviews and judgment have made a massive difference.
We'd miss you badly.

Could we talk you into staying on as a reviewer for now? Zero pressure to
keep up with everything or carry the maintainer load. Just hang around,
jump in whenever you feel like it, and come straight back as a maintainer
whenever life gives you the room.

Seriously, Lorenzo, THP still needs you. Please stick around!

Thanks, Lance

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Lorenzo Stoakes (ARM)]

On Wed, Aug 26, 2026 at 08:43:16PM +0800, Lance Yang wrote:
>
> On Wed, Aug 26, 2026 at 12:31:09PM +0100, Lorenzo Stoakes (ARM) wrote:
> >Since it's 2026 :) I asked Claude to look at my time as THP co-maintainer:
> >
> >	~107,000 words of review across 948 emails (in 279 distinct
> >	threads), counting only prose you actually wrote — quoted text,
> >	signatures and attribution lines stripped. That's a full novel's
> >	worth of review commentary.
> >
> >	Along the way you handed out 194 Reviewed-by and 15 Acked-by tags,
> >	and your longest single review was 2,404 words (mTHP collapse
> >	support, v12 — the khugepaged/mTHP collapse saga accounts for most
> >	of your top-10 longest reviews).
> >
> >	Estimated review time: roughly 300–500 hours, centred around ~400
> >	(i.e. ~7 hours/week for 14 months).
> >
> >	1,615 THP-related emails in the window: 948 reviews of others'
> >	work, 278 replies on your own THP-touching series threads (~31k
> >	more words responding to review), 382 patch emails, and a handful
> >	of MAINTAINERS bits. Busiest months: March 2026 (131 review
> >	emails), June 2026 (113), August 2026 (111); quietest was December
> >	2025 (5).
> >
> >Think I can be happy with that!
>
> Aw, man ... I totally get needing to step back, but we can't let you
> disappear from THP that easily :) You've put a crazy amount of time
> into it, and your reviews and judgment have made a massive difference.
> We'd miss you badly.

Thanks I appreciate that :)

>
> Could we talk you into staying on as a reviewer for now? Zero pressure to
> keep up with everything or carry the maintainer load. Just hang around,
> jump in whenever you feel like it, and come straight back as a maintainer
> whenever life gives you the room.
>
> Seriously, Lorenzo, THP still needs you. Please stick around!

I'm not going anywhere in terms of upstream kernel - and as David suggested
- I am happy to be pinged on threads where my input would be helpful :)

But in general I'm dropping the R: for now as I feel it wouldn't be quite
correct to keep it, as I can't really give much time at all to THP, and it
wouldn't be fair for me to be listed but remain inactive.

I may very well revisit this in the future, but for the time being I think
this is the best way forwards.

Thanks again for the kind words, much appreciated! :)

>
> Thanks, Lance

--
Cheers, Lorenzo

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Lian Wang (ProcessMission)]

On Wed, 26 Aug 2026 12:31:09 +0100 "Lorenzo Stoakes (ARM)" <ljs@kernel.org> wrote:

> Since it's 2026 :) I asked Claude to look at my time as THP co-maintainer:
>
> 	~107,000 words of review across 948 emails (in 279 distinct
> 	threads), counting only prose you actually wrote — quoted text,
> 	signatures and attribution lines stripped. That's a full novel's
> 	worth of review commentary.
>
> 	Along the way you handed out 194 Reviewed-by and 15 Acked-by tags,
> 	and your longest single review was 2,404 words (mTHP collapse
> 	support, v12 — the khugepaged/mTHP collapse saga accounts for most
> 	of your top-10 longest reviews).
>
> 	Estimated review time: roughly 300–500 hours, centred around ~400
> 	(i.e. ~7 hours/week for 14 months).
>
> 	1,615 THP-related emails in the window: 948 reviews of others'
> 	work, 278 replies on your own THP-touching series threads (~31k
> 	more words responding to review), 382 patch emails, and a handful
> 	of MAINTAINERS bits. Busiest months: March 2026 (131 review
> 	emails), June 2026 (113), August 2026 (111); quietest was December
> 	2025 (5).
>
> Think I can be happy with that!
>
> --
> Cheers, Lorenzo

You certainly can.  Thank you very much for everything you have done for
THP and for all the people whose work you have reviewed.

You and David were among the first people to review the first patch I
sent.  Later, SJ, Zi Yan, Mark Brown, and many others also began helping
me.  Although I kept making mistakes, I genuinely wanted to learn enough
to share some of the review and maintenance load that you have been
carrying.

I still have a great deal to learn, but I have started to slow down, think
more carefully, and improve both the technical quality of my work and the
way I submit it.  The help I have received from the community means a lot
to me, and your patience and reviews were an important part of that.

I know none of this changes the workload that led you to step down, but
reading this made me realize again how much time and care you gave to all
of us.  I will be at LPC this year, and I hope I can thank you in person.

I will also be more disciplined about patch preparation, testing evidence,
email formatting, revision history, and the overall submission and review
workflow.  I hope that, over time, I can take on a useful share of the work
rather than add to it.

Thank you again, Lorenzo.  I will miss having you as a THP co-maintainer,
though I am very glad that you will still be around.

Thanks,
Lian

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Lorenzo Stoakes (ARM)]

On Thu, Aug 27, 2026 at 04:23:27PM +0800, Lian Wang (ProcessMission) wrote:
> On Wed, 26 Aug 2026 12:31:09 +0100 "Lorenzo Stoakes (ARM)" <ljs@kernel.org> wrote:
>
> > Since it's 2026 :) I asked Claude to look at my time as THP co-maintainer:
> >
> > 	~107,000 words of review across 948 emails (in 279 distinct
> > 	threads), counting only prose you actually wrote — quoted text,
> > 	signatures and attribution lines stripped. That's a full novel's
> > 	worth of review commentary.
> >
> > 	Along the way you handed out 194 Reviewed-by and 15 Acked-by tags,
> > 	and your longest single review was 2,404 words (mTHP collapse
> > 	support, v12 — the khugepaged/mTHP collapse saga accounts for most
> > 	of your top-10 longest reviews).
> >
> > 	Estimated review time: roughly 300–500 hours, centred around ~400
> > 	(i.e. ~7 hours/week for 14 months).
> >
> > 	1,615 THP-related emails in the window: 948 reviews of others'
> > 	work, 278 replies on your own THP-touching series threads (~31k
> > 	more words responding to review), 382 patch emails, and a handful
> > 	of MAINTAINERS bits. Busiest months: March 2026 (131 review
> > 	emails), June 2026 (113), August 2026 (111); quietest was December
> > 	2025 (5).
> >
> > Think I can be happy with that!
> >
> > --
> > Cheers, Lorenzo
>
> You certainly can.  Thank you very much for everything you have done for
> THP and for all the people whose work you have reviewed.
Thanks :)

>
> You and David were among the first people to review the first patch I
> sent.  Later, SJ, Zi Yan, Mark Brown, and many others also began helping
> me.  Although I kept making mistakes, I genuinely wanted to learn enough
> to share some of the review and maintenance load that you have been
> carrying.

I'm glad I was able to help :) and mistakes are just part of being human, I
make the dumbest mistakes _constantly_ :>) so the key is really trying to
always find ways to quickly fix things up and improve.

>
> I still have a great deal to learn, but I have started to slow down, think
> more carefully, and improve both the technical quality of my work and the
> way I submit it.  The help I have received from the community means a lot
> to me, and your patience and reviews were an important part of that.

I really think going over and thinking carefully about the code and the
approach is really helpful.

Also review really helps with getting perspective on what other people are
doing and how things fit together so is super helpful for improving too
(part of why I do a lot of it!).

Am very glad the feedback has helped :) I know that sometimes I am not
quite as patient as I could be but I do try to do my best, and felt I've
developed over time as a reviewer, albeit never quite being perfect on that
front :)

>
> I know none of this changes the workload that led you to step down, but
> reading this made me realize again how much time and care you gave to all
> of us.  I will be at LPC this year, and I hope I can thank you in person.

Thanks, feel free to come say hi :)

>
> I will also be more disciplined about patch preparation, testing evidence,
> email formatting, revision history, and the overall submission and review
> workflow.  I hope that, over time, I can take on a useful share of the work
> rather than add to it.

Amazing, yeah I think the key thing to realise is that while feedback can
be painful (for me too!), everybody is aiming at the same thing - trying to
make things better and improve the kernel for everybody.

>
> Thank you again, Lorenzo.  I will miss having you as a THP co-maintainer,
> though I am very glad that you will still be around.

Thanks again for your kind words! :)

>
> Thanks,
> Lian

--
Cheers, Lorenzo

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Baolin Wang]

On 8/26/26 7:31 PM, Lorenzo Stoakes (ARM) wrote:
> Since it's 2026 :) I asked Claude to look at my time as THP co-maintainer:
> 
> 	~107,000 words of review across 948 emails (in 279 distinct
> 	threads), counting only prose you actually wrote — quoted text,
> 	signatures and attribution lines stripped. That's a full novel's
> 	worth of review commentary.
> 
> 	Along the way you handed out 194 Reviewed-by and 15 Acked-by tags,
> 	and your longest single review was 2,404 words (mTHP collapse
> 	support, v12 — the khugepaged/mTHP collapse saga accounts for most
> 	of your top-10 longest reviews).
> 
> 	Estimated review time: roughly 300–500 hours, centred around ~400
> 	(i.e. ~7 hours/week for 14 months).
> 
> 	1,615 THP-related emails in the window: 948 reviews of others'
> 	work, 278 replies on your own THP-touching series threads (~31k
> 	more words responding to review), 382 patch emails, and a handful
> 	of MAINTAINERS bits. Busiest months: March 2026 (131 review
> 	emails), June 2026 (113), August 2026 (111); quietest was December
> 	2025 (5).
> 
> Think I can be happy with that!

Hi Lorenzo,

Thanks for your great work as THP co-maintainer (we all know THP is one 
of the busiest subsystems in the MM :)). I am glad to work with you and 
very much appreciate your review comments and suggestions.

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Lorenzo Stoakes (ARM)]

On Thu, Aug 27, 2026 at 04:38:12PM +0800, Baolin Wang wrote:
>
>
> On 8/26/26 7:31 PM, Lorenzo Stoakes (ARM) wrote:
> > Since it's 2026 :) I asked Claude to look at my time as THP co-maintainer:
> >
> > 	~107,000 words of review across 948 emails (in 279 distinct
> > 	threads), counting only prose you actually wrote — quoted text,
> > 	signatures and attribution lines stripped. That's a full novel's
> > 	worth of review commentary.
> >
> > 	Along the way you handed out 194 Reviewed-by and 15 Acked-by tags,
> > 	and your longest single review was 2,404 words (mTHP collapse
> > 	support, v12 — the khugepaged/mTHP collapse saga accounts for most
> > 	of your top-10 longest reviews).
> >
> > 	Estimated review time: roughly 300–500 hours, centred around ~400
> > 	(i.e. ~7 hours/week for 14 months).
> >
> > 	1,615 THP-related emails in the window: 948 reviews of others'
> > 	work, 278 replies on your own THP-touching series threads (~31k
> > 	more words responding to review), 382 patch emails, and a handful
> > 	of MAINTAINERS bits. Busiest months: March 2026 (131 review
> > 	emails), June 2026 (113), August 2026 (111); quietest was December
> > 	2025 (5).
> >
> > Think I can be happy with that!
>
> Hi Lorenzo,
>
> Thanks for your great work as THP co-maintainer (we all know THP is one of
> the busiest subsystems in the MM :)). I am glad to work with you and very
> much appreciate your review comments and suggestions.

Thanks much appreciate :)

--
Cheers, Lorenzo

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Usama Arif]

On 26/08/2026 12:31, Lorenzo Stoakes (ARM) wrote:
> Since it's 2026 :) I asked Claude to look at my time as THP co-maintainer:
> 
> 	~107,000 words of review across 948 emails (in 279 distinct
> 	threads), counting only prose you actually wrote — quoted text,
> 	signatures and attribution lines stripped. That's a full novel's
> 	worth of review commentary.
> 
> 	Along the way you handed out 194 Reviewed-by and 15 Acked-by tags,
> 	and your longest single review was 2,404 words (mTHP collapse
> 	support, v12 — the khugepaged/mTHP collapse saga accounts for most
> 	of your top-10 longest reviews).
> 
> 	Estimated review time: roughly 300–500 hours, centred around ~400
> 	(i.e. ~7 hours/week for 14 months).
> 
> 	1,615 THP-related emails in the window: 948 reviews of others'
> 	work, 278 replies on your own THP-touching series threads (~31k
> 	more words responding to review), 382 patch emails, and a handful
> 	of MAINTAINERS bits. Busiest months: March 2026 (131 review
> 	emails), June 2026 (113), August 2026 (111); quietest was December
> 	2025 (5).
> 
> Think I can be happy with that!
> 
Ah so sorry to see you step down, you made THP genuinely better!

The numbers show the amount of effort you have put in, but they don't capture
how consistently useful and detailed your reviews are, with the aim of
always trying to make the patches and THP better!

Thanks for being an awesome maintainer and hopefully you will consider
coming back soon!

Thanks,
Usama

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Lorenzo Stoakes (ARM)]

On Thu, Aug 27, 2026 at 03:15:47PM +0100, Usama Arif wrote:
>
>
> On 26/08/2026 12:31, Lorenzo Stoakes (ARM) wrote:
> > Since it's 2026 :) I asked Claude to look at my time as THP co-maintainer:
> >
> > 	~107,000 words of review across 948 emails (in 279 distinct
> > 	threads), counting only prose you actually wrote — quoted text,
> > 	signatures and attribution lines stripped. That's a full novel's
> > 	worth of review commentary.
> >
> > 	Along the way you handed out 194 Reviewed-by and 15 Acked-by tags,
> > 	and your longest single review was 2,404 words (mTHP collapse
> > 	support, v12 — the khugepaged/mTHP collapse saga accounts for most
> > 	of your top-10 longest reviews).
> >
> > 	Estimated review time: roughly 300–500 hours, centred around ~400
> > 	(i.e. ~7 hours/week for 14 months).
> >
> > 	1,615 THP-related emails in the window: 948 reviews of others'
> > 	work, 278 replies on your own THP-touching series threads (~31k
> > 	more words responding to review), 382 patch emails, and a handful
> > 	of MAINTAINERS bits. Busiest months: March 2026 (131 review
> > 	emails), June 2026 (113), August 2026 (111); quietest was December
> > 	2025 (5).
> >
> > Think I can be happy with that!
> >
> Ah so sorry to see you step down, you made THP genuinely better!
>
> The numbers show the amount of effort you have put in, but they don't capture
> how consistently useful and detailed your reviews are, with the aim of
> always trying to make the patches and THP better!
>
> Thanks for being an awesome maintainer and hopefully you will consider
> coming back soon!

Thanks Usama! :) I know we started off with some fireworks on review 😅 but
you've always been fantastic to work with and it's been great to see you
develop as a contributor.

BTW, I did want to say but never got around to it - I love how you've
approached the PUD THP stuff - i.e. getting the huge swap stuff sorted
first, gradually building things up, etc.!

You've always given interesting sessions + input at LSF and have had great
insights on how stuff interacts with the Meta fleet also! :)

It was especially interesting to hear that 512 MiB huge pages have actually
resulted in far less memory usage than you might expect :)

I will still be busy upstream with the 4 other maintainerships to keep me
busy, along with series both in kvmarm and core mm so don't worry I'm not
going anywhere :)

And as I said to David and others, always feel free to cc- me or ping me
off-list etc. if I can be of use for THP stuff, even though I'm taking a
break from the maintainership side!

>
> Thanks,
> Usama

--
Cheers, Lorenzo

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Usama Arif]

On 27/08/2026 15:25, Lorenzo Stoakes (ARM) wrote:
> On Thu, Aug 27, 2026 at 03:15:47PM +0100, Usama Arif wrote:
>>
>>
>> On 26/08/2026 12:31, Lorenzo Stoakes (ARM) wrote:
>>> Since it's 2026 :) I asked Claude to look at my time as THP co-maintainer:
>>>
>>> 	~107,000 words of review across 948 emails (in 279 distinct
>>> 	threads), counting only prose you actually wrote — quoted text,
>>> 	signatures and attribution lines stripped. That's a full novel's
>>> 	worth of review commentary.
>>>
>>> 	Along the way you handed out 194 Reviewed-by and 15 Acked-by tags,
>>> 	and your longest single review was 2,404 words (mTHP collapse
>>> 	support, v12 — the khugepaged/mTHP collapse saga accounts for most
>>> 	of your top-10 longest reviews).
>>>
>>> 	Estimated review time: roughly 300–500 hours, centred around ~400
>>> 	(i.e. ~7 hours/week for 14 months).
>>>
>>> 	1,615 THP-related emails in the window: 948 reviews of others'
>>> 	work, 278 replies on your own THP-touching series threads (~31k
>>> 	more words responding to review), 382 patch emails, and a handful
>>> 	of MAINTAINERS bits. Busiest months: March 2026 (131 review
>>> 	emails), June 2026 (113), August 2026 (111); quietest was December
>>> 	2025 (5).
>>>
>>> Think I can be happy with that!
>>>
>> Ah so sorry to see you step down, you made THP genuinely better!
>>
>> The numbers show the amount of effort you have put in, but they don't capture
>> how consistently useful and detailed your reviews are, with the aim of
>> always trying to make the patches and THP better!
>>
>> Thanks for being an awesome maintainer and hopefully you will consider
>> coming back soon!
> 
> Thanks Usama! :) I know we started off with some fireworks on review 😅 but
> you've always been fantastic to work with and it's been great to see you
> develop as a contributor.
> 
> BTW, I did want to say but never got around to it - I love how you've
> approached the PUD THP stuff - i.e. getting the huge swap stuff sorted
> first, gradually building things up, etc.!
> 
> You've always given interesting sessions + input at LSF and have had great
> insights on how stuff interacts with the Meta fleet also! :)
> 
> It was especially interesting to hear that 512 MiB huge pages have actually
> resulted in far less memory usage than you might expect :)
> 
> I will still be busy upstream with the 4 other maintainerships to keep me
> busy, along with series both in kvmarm and core mm so don't worry I'm not
> going anywhere :)
> 
> And as I said to David and others, always feel free to cc- me or ping me
> off-list etc. if I can be of use for THP stuff, even though I'm taking a
> break from the maintainership side!
> 

Thanks for the kind words! It has been awesome working with you and discussing
different topics at conferences and the mailing list! I am sure we will continue to
in the future!

>>
>> Thanks,
>> Usama
> 
> --
> Cheers, Lorenzo

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Vernon Yang]

On Wed, Aug 26, 2026 at 12:31:09PM +0100, Lorenzo Stoakes (ARM) wrote:
> Since it's 2026 :) I asked Claude to look at my time as THP co-maintainer:
>
> 	~107,000 words of review across 948 emails (in 279 distinct
> 	threads), counting only prose you actually wrote — quoted text,
> 	signatures and attribution lines stripped. That's a full novel's
> 	worth of review commentary.
>
> 	Along the way you handed out 194 Reviewed-by and 15 Acked-by tags,
> 	and your longest single review was 2,404 words (mTHP collapse
> 	support, v12 — the khugepaged/mTHP collapse saga accounts for most
> 	of your top-10 longest reviews).
>
> 	Estimated review time: roughly 300–500 hours, centred around ~400
> 	(i.e. ~7 hours/week for 14 months).
>
> 	1,615 THP-related emails in the window: 948 reviews of others'
> 	work, 278 replies on your own THP-touching series threads (~31k
> 	more words responding to review), 382 patch emails, and a handful
> 	of MAINTAINERS bits. Busiest months: March 2026 (131 review
> 	emails), June 2026 (113), August 2026 (111); quietest was December
> 	2025 (5).
>
> Think I can be happy with that!

Thank you very much for your hard work. Over the past two years, THP has
been extremely busy, especially with the addition of mTHP-related
features, which required a great deal of time and effort from the
maintainer. In my main role at my company, I am also responsible for THP
and memory reclaim functionality, so I fully understand how demanding
your work has been. Once again, thank you for all your hard work.

I also am relatively familiar with the implementation of THP. If David
is interested in my R: or need some features implemented, feel free to
let me know. I'm willing to help out and reduce the pressure on the
maintainers.

--
Cheers,
Vernon

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Lorenzo Stoakes (ARM)]

On Fri, Aug 28, 2026 at 02:34:31PM +0800, Vernon Yang wrote:
> On Wed, Aug 26, 2026 at 12:31:09PM +0100, Lorenzo Stoakes (ARM) wrote:
> > Since it's 2026 :) I asked Claude to look at my time as THP co-maintainer:
> >
> > 	~107,000 words of review across 948 emails (in 279 distinct
> > 	threads), counting only prose you actually wrote — quoted text,
> > 	signatures and attribution lines stripped. That's a full novel's
> > 	worth of review commentary.
> >
> > 	Along the way you handed out 194 Reviewed-by and 15 Acked-by tags,
> > 	and your longest single review was 2,404 words (mTHP collapse
> > 	support, v12 — the khugepaged/mTHP collapse saga accounts for most
> > 	of your top-10 longest reviews).
> >
> > 	Estimated review time: roughly 300–500 hours, centred around ~400
> > 	(i.e. ~7 hours/week for 14 months).
> >
> > 	1,615 THP-related emails in the window: 948 reviews of others'
> > 	work, 278 replies on your own THP-touching series threads (~31k
> > 	more words responding to review), 382 patch emails, and a handful
> > 	of MAINTAINERS bits. Busiest months: March 2026 (131 review
> > 	emails), June 2026 (113), August 2026 (111); quietest was December
> > 	2025 (5).
> >
> > Think I can be happy with that!
>
> Thank you very much for your hard work. Over the past two years, THP has
> been extremely busy, especially with the addition of mTHP-related
> features, which required a great deal of time and effort from the
> maintainer. In my main role at my company, I am also responsible for THP
> and memory reclaim functionality, so I fully understand how demanding
> your work has been. Once again, thank you for all your hard work.

Thanks very much :)

--
Cheers, Lorenzo

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Kiryl Shutsemau]

On Wed, Aug 26, 2026 at 10:56:39AM +0100, Lorenzo Stoakes (ARM) wrote:
> Unfortunately my workload is such that I simply no longer have the time to
> give THP the focus that it deserves.

Ouch.

I guess my 57-patch series did help the situation :/ Sorry about that.

It would be only fair if I share review load for THP. I will try to be
more active on review.

David, I can send patch if you are interested in my R:. I know thing or
two about THP and can be useful there.

-- 
  Kiryl Shutsemau / Kirill A. Shutemov

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[David Hildenbrand (Arm)]

On 8/26/26 14:04, Kiryl Shutsemau wrote:
> On Wed, Aug 26, 2026 at 10:56:39AM +0100, Lorenzo Stoakes (ARM) wrote:
>> Unfortunately my workload is such that I simply no longer have the time to
>> give THP the focus that it deserves.
> 
> Ouch.
> 
> I guess my 57-patch series did help the situation :/ Sorry about that.
> 
> It would be only fair if I share review load for THP. I will try to be
> more active on review.
> 
> David, I can send patch if you are interested in my R:. I know thing or
> two about THP and can be useful there.

Yes, please! :)

-- 
Cheers,

David

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Lorenzo Stoakes (ARM)]

On Wed, Aug 26, 2026 at 02:52:27PM +0200, David Hildenbrand (Arm) wrote:
> On 8/26/26 14:04, Kiryl Shutsemau wrote:
> > On Wed, Aug 26, 2026 at 10:56:39AM +0100, Lorenzo Stoakes (ARM) wrote:
> >> Unfortunately my workload is such that I simply no longer have the time to
> >> give THP the focus that it deserves.
> >
> > Ouch.
> >
> > I guess my 57-patch series did help the situation :/ Sorry about that.
> >
> > It would be only fair if I share review load for THP. I will try to be
> > more active on review.
> >
> > David, I can send patch if you are interested in my R:. I know thing or
> > two about THP and can be useful there.
>
> Yes, please! :)

Thanks Kiryl :)

>
> --
> Cheers,
>
> David

--
Cheers, Lorenzo

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Barry Song]

On Wed, Aug 26, 2026 at 5:56 PM Lorenzo Stoakes (ARM) <ljs@kernel.org> wrote:
>
> Unfortunately my workload is such that I simply no longer have the time to
> give THP the focus that it deserves.
>
> So, at least temporarily, step down from the role.
>
> Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
> ---

Thanks very much for all your hard work, Lorenzo. I can really appreciate
how busy you are, especially while you’re still developing so many things
at the same time as doing reviews.

Personally, I also feel a bit bad that I haven't been able to contribute
anywhere near as much as you have. I still have a lot of catching up to do.

Right now, as David probably knows well, my colleagues and I are working
on both FS large folios[1] and mTHP[2]. I really feel that I’ll be able
to spend more time on THP-related work and reviews.

Lorenzo, you have my deepest respect.

[1] https://lore.kernel.org/lkml/20260826082641.2007658-1-zhaonanzhe@xiaomi.com/
[2] https://lore.kernel.org/lkml/20260825043833.2659350-1-zhangbo56@xiaomi.com/

Best Regards
Barry

Re: [PATCH] MAINTAINERS: remove myself as THP co-maintainer

[Lorenzo Stoakes (ARM)]

On Thu, Aug 27, 2026 at 05:02:50AM +0800, Barry Song wrote:
> On Wed, Aug 26, 2026 at 5:56 PM Lorenzo Stoakes (ARM) <ljs@kernel.org> wrote:
> >
> > Unfortunately my workload is such that I simply no longer have the time to
> > give THP the focus that it deserves.
> >
> > So, at least temporarily, step down from the role.
> >
> > Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
> > ---
>
> Thanks very much for all your hard work, Lorenzo. I can really appreciate
> how busy you are, especially while you’re still developing so many things
> at the same time as doing reviews.

Thanks :)

>
> Personally, I also feel a bit bad that I haven't been able to contribute
> anywhere near as much as you have. I still have a lot of catching up to do.

You shouldn't, I often feel bad about how I haven't done X kind of work, or
Y kind of work, etc. I think feeling this way is just a product of working
on kernel stuff.

The scope is so broad that it's hard not to feel like you're accomplishing
everything you could, no matter what!

>
> Right now, as David probably knows well, my colleagues and I are working
> on both FS large folios[1] and mTHP[2]. I really feel that I’ll be able
> to spend more time on THP-related work and reviews.

Great review and contributions are always welcome :)

>
> Lorenzo, you have my deepest respect.

Thank you very much Barry, that's very kind of you :) likewise!

>
> [1] https://lore.kernel.org/lkml/20260826082641.2007658-1-zhaonanzhe@xiaomi.com/
> [2] https://lore.kernel.org/lkml/20260825043833.2659350-1-zhangbo56@xiaomi.com/
>
> Best Regards
> Barry

--
Cheers, Lorenzo