On 7/30/21 8:39 AM, Michal Hocko wrote:
> On Fri 30-07-21 14:26:35, Baolin Wang wrote:
>> Since commit c843966c556d ("mm: allow swappiness that prefers reclaiming
>> anon over the file workingset") has expended the swappiness value to
>> make swap to be preferred in some systems. We should also change the
>> memcg swappiness restriction to allow memcg swap-preferred.
>>
>> Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
>
> Yes, this looks like an omission. It doesn't really make sense to have
> two different constrains on the value.
>
> Acked-by: Michal Hocko <mhocko@xxxxxxxx>
So, also Fixes: c843966c556d ("mm: allow swappiness that prefers reclaiming anon
over the file workingset")
?
> Thanks!
>
>> ---
>> mm/memcontrol.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
>> index 6580c23..988fc94 100644
>> --- a/mm/memcontrol.c
>> +++ b/mm/memcontrol.c
>> @@ -4046,7 +4046,7 @@ static int mem_cgroup_swappiness_write(struct cgroup_subsys_state *css,
>> {
>> struct mem_cgroup *memcg = mem_cgroup_from_css(css);
>>
>> - if (val > 100)
>> + if (val > 200)
>> return -EINVAL;
>>
>> if (!mem_cgroup_is_root(memcg))
>> --
>> 1.8.3.1
>
