1 files changed, 10 insertions, 0 deletions

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 87a4045580f2..20ea42c45e4a 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -43,6 +43,16 @@
         for (order = 0; order < MAX_ORDER; order++) \
                 for (type = 0; type < MIGRATE_TYPES; type++)
 
+extern int page_group_by_mobility_disabled;
+
+static inline int get_pageblock_migratetype(struct page *page)
+{
+        if (unlikely(page_group_by_mobility_disabled))
+                return MIGRATE_UNMOVABLE;
+
+        return get_pageblock_flags_group(page, PB_migrate, PB_migrate_end);
+}
+
 struct free_area {
         struct list_head        free_list[MIGRATE_TYPES];
         unsigned long           nr_free;