The patch titled Subject: mm/mmap: use hotplug_memory_notifier() directly has been added to the -mm mm-unstable branch. Its filename is mm-mmap-use-hotplug_memory_notifier-directly.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-mmap-use-hotplug_memory_notifier-directly.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Liu Shixin <liushixin2@xxxxxxxxxx> Subject: mm/mmap: use hotplug_memory_notifier() directly Date: Fri, 23 Sep 2022 11:33:43 +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/20220923033347.3935160-5-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/mmap.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) --- a/mm/mmap.c~mm-mmap-use-hotplug_memory_notifier-directly +++ a/mm/mmap.c @@ -3746,13 +3746,9 @@ static int reserve_mem_notifier(struct n 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; _ Patches currently in -mm which might be from liushixin2@xxxxxxxxxx are cgroup-cpuset-use-hotplug_memory_notifier-directly.patch fs-proc-kcorec-use-hotplug_memory_notifier-directly.patch mm-slubc-use-hotplug_memory_notifier-directly.patch mm-mmap-use-hotplug_memory_notifier-directly.patch mm-mm_initc-use-hotplug_memory_notifier-directly.patch acpi-hmat-use-hotplug_memory_notifier-directly.patch memory-remove-unused-register_hotmemory_notifier.patch memory-move-hotplug-memory-notifier-priority-to-same-file-for-easy-sorting.patch