diff --git a/mm/page_isolation.c b/mm/page_isolation.c
index 019280712e1b8b7e075b51573b5c56d07aef3922..e3638a5bafff9b7058e4176973bc965fbb11a4cd 100644
--- a/mm/page_isolation.c
+++ b/mm/page_isolation.c
@@ -151,8 +151,6 @@ __first_valid_page(unsigned long pfn, unsigned long nr_pages)
 	for (i = 0; i < nr_pages; i++) {
 		struct page *page;
 
-		if (!pfn_valid_within(pfn + i))
-			continue;
 		page = pfn_to_online_page(pfn + i);
 		if (!page)
 			continue;