>On 11/29/19 2:29 AM, Chanho Min wrote:
>> When zspage is migrated to the other zone, the zone page state should
>> be updated as well.

> What are the user visible effects? I assume NR_ZSPAGES accounting can go
> wrong otherwise? Has it been observed in practice? 
Right, NR_ZSPAGES for each zone shows wrong counts including proc/zoneinfo in practice.
> Should we Cc stable and identify a Fixes: commit?
Yes, I added cc:stable and Fixes.
Cc: stable@vger.kernel.org # v4.9+
Fixes: 91537fee0013 ("mm: add NR_ZSMALLOC to vmstat")
Thanks,
Chanho