Re: [RFC PATCH] docs/mm: add VMA locks documentation

[Qi Zheng]

On 2024/11/5 00:42, Lorenzo Stoakes wrote:
> On Sat, Nov 02, 2024 at 02:45:35AM +0100, Jann Horn wrote:
> > On Fri, Nov 1, 2024 at 7:50 PM Lorenzo Stoakes

[...]

> > > +
> > > +Page table locks
> > > +----------------

Many thanks to Lorenzo for documenting page table locks! This is really
needed. And at a glance, I agree with Jann's additions.

> > (except last-level page tables: khugepaged already deletes those for
> > file mappings without using the mmap lock at all in
> > retract_page_tables(), and there is a pending series that will do the
> > same with page tables in other VMAs too, see
> > <https://lore.kernel.org/all/cover.1729157502.git.zhengqi.arch@xxxxxxxxxxxxx/>)

Thanks to Jann for mentioning this series, I just updated it to v2
recently:

https://lore.kernel.org/lkml/cover.1730360798.git.zhengqi.arch@xxxxxxxxxxxxx/

> Ugh wut OK haha. Will look into this.

Thanks!