Re: [PATCH v1 00/14] Add support for shared PTEs across processes

[Dave Hansen]

On 4/11/22 10:37, Matthew Wilcox wrote:
> Another argument that MM developers find compelling is that we can reduce
> some of the complexity in hugetlbfs where it has the ability to share
> page tables between processes.

When could this complexity reduction actually happen in practice?  Can
this mshare thingy be somehow dropped in underneath the existing
hugetlbfs implementation?  Or would userspace need to change?