[PATCH v8 06/12] mm/hotplug: Kill is_dev_zone() usage in __remove_pages()

[Dan Williams]

The zone type check was a leftover from the cleanup that plumbed altmap
through the memory hotplug path, i.e. commit da024512a1fa "mm: pass the
vmem_altmap to arch_remove_memory and __remove_pages".

Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Logan Gunthorpe <logang@xxxxxxxxxxxx>
Cc: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Reviewed-by: Oscar Salvador <osalvador@xxxxxxx>
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
---
 mm/memory_hotplug.c |    7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 393ab2b9c3f7..cb9e68729ea3 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -544,11 +544,8 @@ void __remove_pages(struct zone *zone, unsigned long phys_start_pfn,
 	unsigned long map_offset = 0;
 	int sections_to_remove;
 
-	/* In the ZONE_DEVICE case device driver owns the memory region */
-	if (is_dev_zone(zone)) {
-		if (altmap)
-			map_offset = vmem_altmap_offset(altmap);
-	}
+	if (altmap)
+		map_offset = vmem_altmap_offset(altmap);
 
 	clear_zone_contiguous(zone);