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.