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SubjectRe: [PATCH 1/3] mm/memory_hotplug: use helper zone_is_zone_device() to simplify the code
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On 21.08.21 11:42, Miaohe Lin wrote:
> Use helper zone_is_zone_device() to simplify the code and remove some
> explicit CONFIG_ZONE_DEVICE codes.
>
> Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
> ---
> mm/memory_hotplug.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
> index b287ff3d7229..d986d3791986 100644
> --- a/mm/memory_hotplug.c
> +++ b/mm/memory_hotplug.c
> @@ -477,15 +477,13 @@ void __ref remove_pfn_range_from_zone(struct zone *zone,
> sizeof(struct page) * cur_nr_pages);
> }
>
> -#ifdef CONFIG_ZONE_DEVICE
> /*
> * Zone shrinking code cannot properly deal with ZONE_DEVICE. So
> * we will not try to shrink the zones - which is okay as
> * set_zone_contiguous() cannot deal with ZONE_DEVICE either way.
> */
> - if (zone_idx(zone) == ZONE_DEVICE)
> + if (zone_is_zone_device(zone))
> return;
> -#endif
>
> clear_zone_contiguous(zone);
>
>

Reviewed-by: David Hildenbrand <david@redhat.com>

--
Thanks,

David / dhildenb

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