[PATCH v3 06/11] mm/memory_hotplug: Allow arch_remove_pages() without CONFIG_MEMORY_HOTREMOVE

[Pavel Tatashin]

On Mon, May 27, 2019 at 7:12 AM David Hildenbrand <david at redhat.com> wrote:
>
> We want to improve error handling while adding memory by allowing
> to use arch_remove_memory() and __remove_pages() even if
> CONFIG_MEMORY_HOTREMOVE is not set to e.g., implement something like:
>
>         arch_add_memory()
>         rc = do_something();
>         if (rc) {
>                 arch_remove_memory();
>         }
>
> We won't get rid of CONFIG_MEMORY_HOTREMOVE for now, as it will require
> quite some dependencies for memory offlining.

I like this simplification, we should really get rid of CONFIG_MEMORY_HOTREMOVE.
Reviewed-by: Pavel Tatashin <pasha.tatashin at soleen.com>