Re: [PATCH v2 3/3] fs: Use delayed shrinker unregistration

[Andrew Morton]

On Fri, 9 Jun 2023 09:17:54 +1000 Dave Chinner <david@xxxxxxxxxxxxx> wrote:

> > Given that we're at -rc5 now, and the file system folks didn't get
> > consulted until fairly late in the progress, and the fact that this
> > may cause use-after-free problems that could lead to security issues,
> > perhaps we shoould consider reverting the SRCU changeover now, and try
> > again for the next merge window?
> 
> Yes, please, because I think we can fix this in a much better way
> and make things a whole lot simpler at the same time.

Qi Zheng, if agreeable could you please prepare and send reverts of
475733dda5a ("mm: vmscan: add shrinker_srcu_generation") and of
f95bdb700bc6bb74 ("mm: vmscan: make global slab shrink lockless")?

Thanks.