Re: [Xen-devel] [PATCH v1] mm/memory_hotplug: drop "online" parameter from add_memory_resource()

[Michal Hocko <mhocko@xxxxxxxxxx>]

On Fri 23-11-18 13:37:40, David Hildenbrand wrote:
> User space should always be in charge of how to online memory and
> if memory should be onlined automatically in the kernel. Let's drop the
> parameter to overwrite this - XEN passes memhp_auto_online, just like
> add_memory(), so we can directly use that instead internally.

Heh, I wanted to get rid of memhp_auto_online so much and now we have it
in the core memory_hotplug. Not a win on my side I would say :/
On the other hand this can be seen as a cleanup because it removes that
ambiguity that some callers might be unaware of the memhp_auto_online
leading to a different behavior.

> Cc: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
> Cc: Juergen Gross <jgross@xxxxxxxx>
> Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
> Cc: Oscar Salvador <osalvador@xxxxxxx>
> Cc: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx>
> Cc: Michal Hocko <mhocko@xxxxxxxx>
> Cc: David Hildenbrand <david@xxxxxxxxxx>
> Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
> Cc: Arun KS <arunks@xxxxxxxxxxxxxx>
> Cc: Mathieu Malaterre <malat@xxxxxxxxxx>
> Cc: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>

Acked-by: Michal Hocko <mhocko@xxxxxxxx>
-- 
Michal Hocko
SUSE Labs

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