Re: [LSF/MM/BPF TOPIC] The future of anon_vma

[Lorenzo Stoakes <lorenzo.stoakes@oracle.com>]

Michal has kindly already updated, but the subject in thread is now misleading,
correct one is 'Better anon VMA merging' :)

On Thu, Mar 13, 2025 at 06:41:40PM +0000, Lorenzo Stoakes wrote:
> As with the ongoing evolution of this, as previously discussed, the focus
> has settled on merging of anonymous VMAs and improving this mergeability.
>
> I have an RFC series (not upstreamed yet, but should be by LSF) which
> optionally permits improved anonymous mapping mergeability by passing a
> flag to mremap().

Now posted at
https://lore.kernel.org/all/cover.1742478846.git.lorenzo.stoakes@oracle.com/

Also with a pre-requisite series at
https://lore.kernel.org/all/cover.1742245056.git.lorenzo.stoakes@oracle.com/

>
> In this topic I'd like to discuss that, anon_vma in general motivations for
> it, why it's hard, etc.
>
> This dovetails with the original proposal - bit is a less ambitious, more
> short-term 'how can we improve the situation' kind of thing. Maybe next
> year there can be more :)
>
> My slides are at ~31 right now, so I wonder whether I could have an hour
> slot for this? As I'd also like to have some discussion of course! :)

Just for the record haha - that's no need for this :P I have already cut my
slides down to 1/2 hour.

The remaining ones can perhaps be re-used at a different conference where I
could go into more introductionary depth on anon_vma etc.!

>
> Thanks!

See you all in Montreal! :)

Cheers, Lorenzo