Re: [PATCH v3 1/8] cgroup/cpuset: use hotplug_memory_notifier() directly

From: Liu Shixin
Date: Thu Sep 22 2022 - 21:56:44 EST




On 2022/9/23 1:56, David Hildenbrand wrote:
> On 22.09.22 16:18, Liu Shixin wrote:
>> Since patch 316346243be6 has already updated the minimum gcc version to 5.1.
>> The previous problem mentioned in patch f02c69680088 is not existed. So we
>> can now revert to use hotplug_memory_notifier() directly rather than
>> register_hotmemory_notifier().
>>
>> Signed-off-by: Liu Shixin <liushixin2@xxxxxxxxxx>
>> ---
>> kernel/cgroup/cpuset.c | 7 +------
>> 1 file changed, 1 insertion(+), 6 deletions(-)
>>
>> diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
>> index b474289c15b8..0c6db6a4f427 100644
>> --- a/kernel/cgroup/cpuset.c
>> +++ b/kernel/cgroup/cpuset.c
>> @@ -3630,11 +3630,6 @@ static int cpuset_track_online_nodes(struct notifier_block *self,
>> return NOTIFY_OK;
>> }
>> -static struct notifier_block cpuset_track_online_nodes_nb = {
>> - .notifier_call = cpuset_track_online_nodes,
>> - .priority = 10, /* ??! */
>> -};
>> -
>> /**
>> * cpuset_init_smp - initialize cpus_allowed
>> *
>> @@ -3652,7 +3647,7 @@ void __init cpuset_init_smp(void)
>> cpumask_copy(top_cpuset.effective_cpus, cpu_active_mask);
>> top_cpuset.effective_mems = node_states[N_MEMORY];
>> - register_hotmemory_notifier(&cpuset_track_online_nodes_nb);
>> + hotplug_memory_notifier(cpuset_track_online_nodes, 10);
>> cpuset_migrate_mm_wq = alloc_ordered_workqueue("cpuset_migrate_mm", 0);
>> BUG_ON(!cpuset_migrate_mm_wq);
>
>
> Please don't drop Reviewed-by or Acked-by tags. Otherwise reviewers have no clue which patch they already reviewed -- and they always have little time ;)
>
Thanks for your reminder, I'll keep it in mind.