Commit cddb8d09 authored by Liu Shixin's avatar Liu Shixin Committed by Andrew Morton
Browse files

mm/mmap: use hotplug_memory_notifier() directly 

Commit 76ae8474 ("Documentation: raise minimum supported version of
GCC to 5.1") updated the minimum gcc version to 5.1.  So the problem
mentioned in f02c6968 ("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/20220923033347.3935160-5-liushixin2@huawei.com


Signed-off-by: default avatarLiu Shixin <liushixin2@huawei.com>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Waiman Long <longman@redhat.com>
Cc: zefan li <lizefan.x@bytedance.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 946d5f9c

mm/mmap.c

+1 −5
Original line number Diff line number Diff line
@@ -3749,13 +3749,9 @@ static int reserve_mem_notifier(struct notifier_block *nb, 
	return NOTIFY_OK;

}



static struct notifier_block reserve_mem_nb = {

	.notifier_call = reserve_mem_notifier,

};



static int __meminit init_reserve_notifier(void)

{

	if (register_hotmemory_notifier(&reserve_mem_nb))

	if (hotplug_memory_notifier(reserve_mem_notifier, 0))

		pr_err("Failed registering memory add/remove notifier for admin reserve\n");



	return 0;