On Mon, Feb 22, 2021 at 10:38:27AM -0800, Tim Chen wrote:
> Johannes,
>
> Thanks for your feedback. Since Michal has concerns about the overhead
> this patch could incur, I think we'll hold the patch for now. If later
> on Michal think that this patch is a good idea, I'll incorporate these
>
On 2/17/21 9:56 PM, Johannes Weiner wrote:
>> static inline void uncharge_gather_clear(struct uncharge_gather *ug)
>> @@ -6849,7 +6850,13 @@ static void uncharge_page(struct page *page, struct
>> uncharge_gather *ug)
>> * exclusive access to the page.
>> */
>>
>> -if
On 2/22/21 12:41 AM, Michal Hocko wrote:
>>
>>
>> Ah, that's true. The added check for soft_limit_excess is not needed.
>>
>> Do you think it is still a good idea to add patch 3 to
>> restrict the uncharge update in page batch of the same node and cgroup?
>
> I would rather drop it. The less
On Fri 19-02-21 11:28:47, Tim Chen wrote:
>
>
> On 2/19/21 1:16 AM, Michal Hocko wrote:
>
> >>
> >> Something like this?
> >>
> >> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> >> index 8bddee75f5cb..b50cae3b2a1a 100644
> >> --- a/mm/memcontrol.c
> >> +++ b/mm/memcontrol.c
> >> @@ -3472,6
On 2/19/21 1:16 AM, Michal Hocko wrote:
>>
>> Something like this?
>>
>> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
>> index 8bddee75f5cb..b50cae3b2a1a 100644
>> --- a/mm/memcontrol.c
>> +++ b/mm/memcontrol.c
>> @@ -3472,6 +3472,14 @@ unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t
On Wed 17-02-21 12:41:36, Tim Chen wrote:
> On a per node basis, the mem cgroup soft limit tree on each node tracks
> how much a cgroup has exceeded its soft limit memory limit and sorts
> the cgroup by its excess usage. On page release, the trees are not
> updated right away, until we have
On Wed, Feb 17, 2021 at 12:41:36PM -0800, Tim Chen wrote:
> On a per node basis, the mem cgroup soft limit tree on each node tracks
> how much a cgroup has exceeded its soft limit memory limit and sorts
> the cgroup by its excess usage. On page release, the trees are not
> updated right away,
On a per node basis, the mem cgroup soft limit tree on each node tracks
how much a cgroup has exceeded its soft limit memory limit and sorts
the cgroup by its excess usage. On page release, the trees are not
updated right away, until we have gathered a batch of pages belonging to
the same cgroup.
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