Re: [PATCH block/for-next] blk-cgroup: cgroup_rstat_updated() shouldn't be called on cgroup1

[Jens Axboe]

On 11/14/19 3:31 PM, Tejun Heo wrote:
> Currently, cgroup rstat is supported only on cgroup2 hierarchy and
> rstat functions shouldn't be called on cgroup1 cgroups.  While
> converting blk-cgroup core statistics to rstat, f73316482977
> ("blk-cgroup: reimplement basic IO stats using cgroup rstat")
> accidentally ended up calling cgroup_rstat_updated() on cgroup1
> cgroups causing crashes.
> 
> Longer term, we probably should add cgroup1 support to rstat but for
> now let's mask the call directly.

Applied, thanks.

-- 
Jens Axboe