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From:   Liu Shixin <liushixin2@huawei.com>
To:     Andrew Morton <akpm@linux-foundation.org>,
        David Hildenbrand <david@redhat.com>,
        Waiman Long <longman@redhat.com>,
        Zefan Li <lizefan.x@bytedance.com>,
        Christoph Lameter <cl@linux.com>
CC:     <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>,
        Liu Shixin <liushixin2@huawei.com>,
        Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: [PATCH v4 3/8] mm/slub.c: use hotplug_memory_notifier() directly
Date:   Fri, 23 Sep 2022 11:33:42 +0800
Message-ID: <20220923033347.3935160-4-liushixin2@huawei.com>
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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@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
---
 mm/slub.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/mm/slub.c b/mm/slub.c
index 234bf0e44262..9a0853e01fd7 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -4698,11 +4698,6 @@ static int slab_memory_callback(struct notifier_block *self,
 	return ret;
 }
 
-static struct notifier_block slab_memory_callback_nb = {
-	.notifier_call = slab_memory_callback,
-	.priority = SLAB_CALLBACK_PRI,
-};
-
 /********************************************************************
  *			Basic setup of slabs
  *******************************************************************/
@@ -4768,7 +4763,7 @@ void __init kmem_cache_init(void)
 	create_boot_cache(kmem_cache_node, "kmem_cache_node",
 		sizeof(struct kmem_cache_node), SLAB_HWCACHE_ALIGN, 0, 0);
 
-	register_hotmemory_notifier(&slab_memory_callback_nb);
+	hotplug_memory_notifier(slab_memory_callback, SLAB_CALLBACK_PRI);
 
 	/* Able to allocate the per node structures */
 	slab_state = PARTIAL;
-- 
2.25.1