kernel,cpuset: use node-notifier instead of memory-notifier

cpuset is only concerned when a numa node changes its memory state, as it
needs to know the current numa nodes with memory to keep an updated
mems_allowed mask.  So stop using the memory notifier and use the new numa
node notifer instead.

Link: https://lkml.kernel.org/r/20250616135158.450136-9-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Harry Yoo <harry.yoo@oracle.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Rakie Kim <rakie.kim@sk.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index 3bc4301466f3343ec9394543d1dff9f06693ae65..f74d04429a29c04481a821133aac5f3d70523643 100644 (file)
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -4051,7 +4051,7 @@ void __init cpuset_init_smp(void)
        cpumask_copy(top_cpuset.effective_cpus, cpu_active_mask);
        top_cpuset.effective_mems = node_states[N_MEMORY];
 
-       hotplug_memory_notifier(cpuset_track_online_nodes, CPUSET_CALLBACK_PRI);
+       hotplug_node_notifier(cpuset_track_online_nodes, CPUSET_CALLBACK_PRI);
 
        cpuset_migrate_mm_wq = alloc_ordered_workqueue("cpuset_migrate_mm", 0);
        BUG_ON(!cpuset_migrate_mm_wq);