[PATCH v2 1/8] mm: migrate: remove PageTransHuge check in numamigrate_isolate_page()

[Kefeng Wang]

Since we begin to convert the numa migration code to use folio, which
could let us to handle arbitrary sizes of folio, so drop assert that
we only support PageTransHuge page(PMD size) when order > 0.

Suggested-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
---
 mm/migrate.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/mm/migrate.c b/mm/migrate.c
index b7fa020003f3..646d8ee7f102 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -2483,8 +2483,6 @@ static int numamigrate_isolate_page(pg_data_t *pgdat, struct page *page)
 	int nr_pages = thp_nr_pages(page);
 	int order = compound_order(page);
 
-	VM_BUG_ON_PAGE(order && !PageTransHuge(page), page);
-
 	/* Do not migrate THP mapped by multiple processes */
 	if (PageTransHuge(page) && total_mapcount(page) > 1)
 		return 0;
-- 
2.41.0