1 files changed, 8 insertions, 0 deletions

diff --git a/mm/internal.h b/mm/internal.h
index 2ba87fbfb75b..3314f79d775a 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -118,8 +118,14 @@ struct compact_control {
         unsigned long nr_freepages;     /* Number of isolated free pages */
         unsigned long nr_migratepages;  /* Number of pages to migrate */
         unsigned long free_pfn;         /* isolate_freepages search base */
+        unsigned long start_free_pfn;   /* where we started the search */
         unsigned long migrate_pfn;      /* isolate_migratepages search base */
         bool sync;                      /* Synchronous migration */
+        bool wrapped;                   /* Order > 0 compactions are
+                                           incremental, once free_pfn
+                                           and migrate_pfn meet, we restart
+                                           from the top of the zone;
+                                           remember we wrapped around. */
 
         int order;                      /* order a direct compactor needs */
         int migratetype;                /* MOVABLE, RECLAIMABLE etc */
@@ -347,3 +353,5 @@ extern u32 hwpoison_filter_enable;
 extern unsigned long vm_mmap_pgoff(struct file *, unsigned long,
         unsigned long, unsigned long,
         unsigned long, unsigned long);
+
+extern void set_pageblock_order(void);