Re: possible circular locking dependency mmap_sem/cpu_hotplug_lock.rw_sem

[Michal Hocko]

On Thu 31-08-17 13:10:06, Artem Savkov wrote:
> Hi Michal,
> 
> On Wed, Aug 30, 2017 at 05:43:15PM +0200, Michal Hocko wrote:
> > The previous patch is insufficient. drain_all_stock can still race with
> > the memory offline callback and the underlying memcg disappear. So we
> > need to be more careful and pin the css on the memcg. This patch
> > instead...
> 
> Tried this on top of rc7 and it does fix the splat for me.

Thanks for testing! Can I assume your Tested-by?
-- 
Michal Hocko
SUSE Labs