diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index d3141ac..482ae44 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -377,7 +377,14 @@
 	 * free areas of different sizes
 	 */
 	spinlock_t		lock;
-	int                     all_unreclaimable; /* All pages pinned */
+#if defined CONFIG_COMPACTION || defined CONFIG_CMA
+	/* Set to true when the PG_migrate_skip bits should be cleared */
+	bool			compact_blockskip_flush;
+
+	/* pfns where compaction scanners should start */
+	unsigned long		compact_cached_free_pfn;
+	unsigned long		compact_cached_migrate_pfn;
+#endif
 #ifdef CONFIG_MEMORY_HOTPLUG
 	/* see spanned/present_pages for more description */
 	seqlock_t		span_seqlock;