[PATCH v6 05/10] mm/memory_hotplug: Shrink zones when offlining memory

[Andrew Morton]

On Mon, 14 Oct 2019 11:39:13 +0200 David Hildenbrand <david at redhat.com> wrote:

> > Fixes: d0dc12e86b31 ("mm/memory_hotplug: optimize memory hotplug")
> 
> @Andrew, can you convert that to
> 
> Fixes: f1dd2cd13c4b ("mm, memory_hotplug: do not associate hotadded memory to zones until online") # visible after d0dc12e86b319

Done.

> While adding cc'ing stable at vger.kernel.org # v4.13+ would be nice,
> I doubt it will be easily possible to backport, as we are missing
> some prereq patches (e.g., from Oscar like 2c2a5af6fed2 ("mm,
> memory_hotplug: add nid parameter to arch_remove_memory")). But, it could
> be done with some work.
> 
> I think "Cc: stable at vger.kernel.org # v5.0+" could be done more
> easily. Maybe it's okay to not cc:stable this one. We usually
> online all memory (except s390x), however, s390x does not remove that
> memory ever. Devmem with driver reserved memory would be, however,
> worth backporting this.

I added 

Cc: <stable at vger.kernel.org>	[5.0+]