Re: [RFC PATCH v2 00/13] mm: rework anon_vma and remove anon_vma_chain

[Gregory Price]

On Tue, Jul 07, 2026 at 09:20:24AM +0000, wangtao wrote:
> > >
> > > If there are technical issues, please point them out directly.
> > > Or is this simply how technical discussions are usually conducted in the
> > Linux community or the mm subsystem?
> > 
> > I suggest you go back and read my email.
> 
> At first, I thought I was the only one who found anon_vma hard to understand. After reading your earlier email,
> I realized that many people also consider it difficult to follow. So I tried a different approach and implemented
> anon_vma rmap using a simpler doubly linked list plus depth mechanism.
> 

The in-flight was discussed at LSF and then reported on by lwn

https://lwn.net/Articles/1072378/

https://git.kernel.org/pub/scm/linux/kernel/git/ljs/linux.git/log/?h=project/cow-context

If you have issues with the in-flight work and think there's a better
way, it would be good to engage on that front - rather than posting
competing work and expecting maintainers to have to context switch
between two solutions for an objectively hard to understand problem
(which carries significant risk of regressions).

No one is saying you can't engage, just trying to avoid doing the same
work twice for negative value.

~Gregory