Re: [LSF/MM/BPF TOPIC] Improving MGLRU

Re: [LSF/MM/BPF TOPIC] Improving MGLRU

[Hillf Danton]

On Thu, 26 Feb 2026 15:54:22 +0000 Matthew Wilcox wrote:
> On Fri, Feb 20, 2026 at 01:25:33AM +0800, Kairui Song wrote:
> > MGLRU has been introduced in the mainline for years, but we still have two LRUs
> > today. There are many reasons MGLRU is still not the only LRU implementation in
> > the kernel.
> 
> To my mind, the biggest problem with MGLRU is that Google dumped it on us
> and ran away.  Commit 44958000bada claimed that it was now maintained and
> added three people as maintainers.  In the six months since that commit,
> none of those three people have any commits in mm/!  This is a shameful
> state of affairs.
> 
> I say rip it out.
> 
I suspect you are kidding again. Go and cut it off then we know how sharp
you are.

Re: [LSF/MM/BPF TOPIC] Improving MGLRU

[Vlastimil Babka]

On 5/2/26 10:56, Hillf Danton wrote:
> On Thu, 26 Feb 2026 15:54:22 +0000 Matthew Wilcox wrote:
>> On Fri, Feb 20, 2026 at 01:25:33AM +0800, Kairui Song wrote:
>> > MGLRU has been introduced in the mainline for years, but we still have two LRUs
>> > today. There are many reasons MGLRU is still not the only LRU implementation in
>> > the kernel.
>> 
>> To my mind, the biggest problem with MGLRU is that Google dumped it on us
>> and ran away.  Commit 44958000bada claimed that it was now maintained and
>> added three people as maintainers.  In the six months since that commit,
>> none of those three people have any commits in mm/!  This is a shameful
>> state of affairs.
>> 
>> I say rip it out.
>> 
> I suspect you are kidding again. Go and cut it off then we know how sharp
> you are.
> 

I can't wait for the day when you finally decide to do that with your e-mail
"contributions".

Re: [LSF/MM/BPF TOPIC] Improving MGLRU

[Hillf Danton]

On Sat, 2 May 2026 13:53:20 +0200 Vlastimil Babka wrote:
>On 5/2/26 10:56, Hillf Danton wrote:
>> On Thu, 26 Feb 2026 15:54:22 +0000 Matthew Wilcox wrote:
>>> On Fri, Feb 20, 2026 at 01:25:33AM +0800, Kairui Song wrote:
>>> > MGLRU has been introduced in the mainline for years, but we still have two LRUs
>>> > today. There are many reasons MGLRU is still not the only LRU implementation in
>>> > the kernel.
>>> 
>>> To my mind, the biggest problem with MGLRU is that Google dumped it on us
>>> and ran away.  Commit 44958000bada claimed that it was now maintained and
>>> added three people as maintainers.  In the six months since that commit,
>>> none of those three people have any commits in mm/!  This is a shameful
>>> state of affairs.
>>> 
>>> I say rip it out.
>>> 
>> I suspect you are kidding again. Go and cut it off then we know how sharp
>> you are.
>> 
> I can't wait for the day when you finally decide to do that with your e-mail
> "contributions".
>
Frankly I will get you disappointed because I do not have so much energy to
do anything unusual like turning page to folio. That is too heavy a burdern
on the right shoulder for a non native English speaker.