The quilt patch titled Subject: mm/slub.c: use hotplug_memory_notifier() directly has been removed from the -mm tree. Its filename was mm-slubc-use-hotplug_memory_notifier-directly.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Liu Shixin <liushixin2@xxxxxxxxxx> Subject: mm/slub.c: use hotplug_memory_notifier() directly Date: Fri, 23 Sep 2022 11:33:42 +0800 Commit 76ae847497bc52 ("Documentation: raise minimum supported version of GCC to 5.1") updated the minimum gcc version to 5.1. So the problem mentioned in f02c69680088 ("include/linux/memory.h: implement register_hotmemory_notifier()") no longer exist. So we can now switch to use hotplug_memory_notifier() directly rather than register_hotmemory_notifier(). Link: https://lkml.kernel.org/r/20220923033347.3935160-4-liushixin2@xxxxxxxxxx Signed-off-by: Liu Shixin <liushixin2@xxxxxxxxxx> Reviewed-by: David Hildenbrand <david@xxxxxxxxxx> Cc: Christoph Lameter <cl@xxxxxxxxx> Cc: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> Cc: Waiman Long <longman@xxxxxxxxxx> Cc: zefan li <lizefan.x@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/slub.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) --- a/mm/slub.c~mm-slubc-use-hotplug_memory_notifier-directly +++ a/mm/slub.c @@ -4771,11 +4771,6 @@ static int slab_memory_callback(struct n return ret; } -static struct notifier_block slab_memory_callback_nb = { - .notifier_call = slab_memory_callback, - .priority = SLAB_CALLBACK_PRI, -}; - /******************************************************************** * Basic setup of slabs *******************************************************************/ @@ -4841,7 +4836,7 @@ 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; _ Patches currently in -mm which might be from liushixin2@xxxxxxxxxx are