mm: compaction: handle incorrect MIGRATE_UNMOVABLE type pageblocks

[sfrench/cifs-2.6.git] / mm / internal.h

diff --git a/mm/internal.h b/mm/internal.h
index 8b0fc8da802893d1f7be5892345950032b42d51f..4194ab9dc19b412aa8e15f1b89612aa2595f0c9f 100644 (file)
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -94,6 +94,9 @@ extern void putback_lru_page(struct page *page);
 /*
  * in mm/page_alloc.c
  */
+extern void set_pageblock_migratetype(struct page *page, int migratetype);
+extern int move_freepages_block(struct zone *zone, struct page *page,
+                               int migratetype);
 extern void __free_pages_bootmem(struct page *page, unsigned int order);
 extern void prep_compound_page(struct page *page, unsigned long order);
 #ifdef CONFIG_MEMORY_FAILURE
@@ -101,6 +104,7 @@ extern bool is_free_buddy_page(struct page *page);
 #endif
 
 #if defined CONFIG_COMPACTION || defined CONFIG_CMA
+#include <linux/compaction.h>
 
 /*
  * in mm/compaction.c
@@ -119,11 +123,14 @@ struct compact_control {
        unsigned long nr_migratepages;  /* Number of pages to migrate */
        unsigned long free_pfn;         /* isolate_freepages search base */
        unsigned long migrate_pfn;      /* isolate_migratepages search base */
-       bool sync;                      /* Synchronous migration */
+       enum compact_mode mode;         /* Compaction mode */
 
        int order;                      /* order a direct compactor needs */
        int migratetype;                /* MOVABLE, RECLAIMABLE etc */
        struct zone *zone;
+
+       /* Number of UNMOVABLE destination pageblocks skipped during scan */
+       unsigned long nr_pageblocks_skipped;
 };
 
 unsigned long