[PATCH 1/2] mm/migrate: remove unnecessary is_zone_device_page() check

[Ralph Campbell]

The check for is_zone_device_page() and is_device_private_page() is
unnecessary since the latter is sufficient to determine if the page
is a device private page. Simplify the code for easier reading.

Signed-off-by: Ralph Campbell <rcampb...@nvidia.com>
---
 mm/migrate.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/mm/migrate.c b/mm/migrate.c
index 659d3d8a3e1f..fe339a847328 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -246,13 +246,11 @@ static bool remove_migration_pte(struct page *page, 
struct vm_area_struct *vma,
                else if (pte_swp_uffd_wp(*pvmw.pte))
                        pte = pte_mkuffd_wp(pte);
 
-               if (unlikely(is_zone_device_page(new))) {
-                       if (is_device_private_page(new)) {
-                               entry = make_device_private_entry(new, 
pte_write(pte));
-                               pte = swp_entry_to_pte(entry);
-                               if (pte_swp_uffd_wp(*pvmw.pte))
-                                       pte = pte_swp_mkuffd_wp(pte);
-                       }
+               if (unlikely(is_device_private_page(new))) {
+                       entry = make_device_private_entry(new, pte_write(pte));
+                       pte = swp_entry_to_pte(entry);
+                       if (pte_swp_uffd_wp(*pvmw.pte))
+                               pte = pte_swp_mkuffd_wp(pte);
                }
 
 #ifdef CONFIG_HUGETLB_PAGE
-- 
2.20.1