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-rw-r--r--include/linux/mmzone.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 98f079b..64b2c3a 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -478,6 +478,14 @@ struct zone {
* rarely used fields:
*/
const char *name;
+#ifdef CONFIG_MEMORY_ISOLATION
+ /*
+ * the number of MIGRATE_ISOLATE *pageblock*.
+ * We need this for free page counting. Look at zone_watermark_ok_safe.
+ * It's protected by zone->lock
+ */
+ int nr_pageblock_isolate;
+#endif
} ____cacheline_internodealigned_in_smp;
typedef enum {
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