tcp: enforce tcp_min_snd_mss in tcp_mtu_probing()

[pandora-kernel.git] / mm / internal.h

diff --git a/mm/internal.h b/mm/internal.h
index 2189af4..c444510 100644 (file)
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -100,6 +100,39 @@ extern void prep_compound_page(struct page *page, unsigned long order);
 extern bool is_free_buddy_page(struct page *page);
 #endif
 
+#if defined CONFIG_COMPACTION || defined CONFIG_CMA
+
+/*
+ * in mm/compaction.c
+ */
+/*
+ * compact_control is used to track pages being migrated and the free pages
+ * they are being migrated to during memory compaction. The free_pfn starts
+ * at the end of a zone and migrate_pfn begins at the start. Movable pages
+ * are moved to the end of a zone during a compaction run and the run
+ * completes when free_pfn <= migrate_pfn
+ */
+struct compact_control {
+       struct list_head freepages;     /* List of free pages to migrate to */
+       struct list_head migratepages;  /* List of pages being migrated */
+       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 migrate_pfn;      /* isolate_migratepages search base */
+       bool sync;                      /* Synchronous migration */
+
+       unsigned int order;             /* order a direct compactor needs */
+       int migratetype;                /* MOVABLE, RECLAIMABLE etc */
+       struct zone *zone;
+};
+
+unsigned long
+isolate_freepages_range(unsigned long start_pfn, unsigned long end_pfn);
+unsigned long
+isolate_migratepages_range(struct zone *zone, struct compact_control *cc,
+                          unsigned long low_pfn, unsigned long end_pfn);
+
+#endif
 
 /*
  * function for dealing with page's order in buddy system.
@@ -309,3 +342,5 @@ extern u64 hwpoison_filter_flags_mask;
 extern u64 hwpoison_filter_flags_value;
 extern u64 hwpoison_filter_memcg;
 extern u32 hwpoison_filter_enable;
+
+extern void set_pageblock_order(void);