On 2023/6/9 08:27, Andrew Morton wrote:
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")?
OK. After reading the proposal suggested by Dave, I think it is more
feasible. I will revert the previous changes ASAP, and then try to
implement Dave's proposal.
Thanks,
Qi
Thanks.
