bna: remove unreasonable iocpf timer start

[cascardo/linux.git] / mm / page_isolation.c

diff --git a/mm/page_isolation.c b/mm/page_isolation.c
index 755a42c..303c908 100644 (file)
--- a/mm/page_isolation.c
+++ b/mm/page_isolation.c
@@ -101,7 +101,8 @@ void unset_migratetype_isolate(struct page *page, unsigned migratetype)
                        buddy_idx = __find_buddy_index(page_idx, order);
                        buddy = page + (buddy_idx - page_idx);
 
-                       if (!is_migrate_isolate_page(buddy)) {
+                       if (pfn_valid_within(page_to_pfn(buddy)) &&
+                           !is_migrate_isolate_page(buddy)) {
                                __isolate_free_page(page, order);
                                kernel_map_pages(page, (1 << order), 1);
                                set_page_refcounted(page);