1 files changed, 22 insertions, 13 deletions

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index fac5509c18f0..6cbd1b6c3d20 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -75,9 +75,18 @@ enum {
 
 extern int page_group_by_mobility_disabled;
 
-static inline int get_pageblock_migratetype(struct page *page)
+#define NR_MIGRATETYPE_BITS (PB_migrate_end - PB_migrate + 1)
+#define MIGRATETYPE_MASK ((1UL << NR_MIGRATETYPE_BITS) - 1)
+
+#define get_pageblock_migratetype(page)                                 \
+        get_pfnblock_flags_mask(page, page_to_pfn(page),                \
+                        PB_migrate_end, MIGRATETYPE_MASK)
+
+static inline int get_pfnblock_migratetype(struct page *page, unsigned long pfn)
 {
-        return get_pageblock_flags_group(page, PB_migrate, PB_migrate_end);
+        BUILD_BUG_ON(PB_migrate_end - PB_migrate != 2);
+        return get_pfnblock_flags_mask(page, pfn, PB_migrate_end,
+                                        MIGRATETYPE_MASK);
 }
 
 struct free_area {
@@ -360,9 +369,10 @@ struct zone {
         /* Set to true when the PG_migrate_skip bits should be cleared */
         bool                    compact_blockskip_flush;
 
-        /* pfns where compaction scanners should start */
+        /* pfn where compaction free scanner should start */
         unsigned long           compact_cached_free_pfn;
-        unsigned long           compact_cached_migrate_pfn;
+        /* pfn where async and sync compaction migration scanner should start */
+        unsigned long           compact_cached_migrate_pfn[2];
 #endif
 #ifdef CONFIG_MEMORY_HOTPLUG
         /* see spanned/present_pages for more description */
@@ -481,9 +491,8 @@ struct zone {
          * give them a chance of being in the same cacheline.
          *
          * Write access to present_pages at runtime should be protected by
-         * lock_memory_hotplug()/unlock_memory_hotplug().  Any reader who can't
-         * tolerant drift of present_pages should hold memory hotplug lock to
-         * get a stable value.
+         * mem_hotplug_begin/end(). Any reader who can't tolerant drift of
+         * present_pages should get_online_mems() to get a stable value.
          *
          * Read access to managed_pages should be safe because it's unsigned
          * long. Write access to zone->managed_pages and totalram_pages are
@@ -763,10 +772,10 @@ typedef struct pglist_data {
         unsigned long node_spanned_pages; /* total size of physical page
                                              range, including holes */
         int node_id;
-        nodemask_t reclaim_nodes;       /* Nodes allowed to reclaim from */
         wait_queue_head_t kswapd_wait;
         wait_queue_head_t pfmemalloc_wait;
-        struct task_struct *kswapd;     /* Protected by lock_memory_hotplug() */
+        struct task_struct *kswapd;     /* Protected by
+                                           mem_hotplug_begin/end() */
         int kswapd_max_order;
         enum zone_type classzone_idx;
 #ifdef CONFIG_NUMA_BALANCING
@@ -808,10 +817,10 @@ static inline bool pgdat_is_empty(pg_data_t *pgdat)
 extern struct mutex zonelists_mutex;
 void build_all_zonelists(pg_data_t *pgdat, struct zone *zone);
 void wakeup_kswapd(struct zone *zone, int order, enum zone_type classzone_idx);
-bool zone_watermark_ok(struct zone *z, int order, unsigned long mark,
-                int classzone_idx, int alloc_flags);
-bool zone_watermark_ok_safe(struct zone *z, int order, unsigned long mark,
-                int classzone_idx, int alloc_flags);
+bool zone_watermark_ok(struct zone *z, unsigned int order,
+                unsigned long mark, int classzone_idx, int alloc_flags);
+bool zone_watermark_ok_safe(struct zone *z, unsigned int order,
+                unsigned long mark, int classzone_idx, int alloc_flags);
 enum memmap_context {
         MEMMAP_EARLY,
         MEMMAP_HOTPLUG,