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-rw-r--r--drivers/md/dm.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/md/dm.h b/drivers/md/dm.h
index 81c98d6e35e9..293d5ce62a21 100644
--- a/drivers/md/dm.h
+++ b/drivers/md/dm.h
@@ -33,6 +33,17 @@
#define SECTOR_SHIFT 9
/*
+ * Definitions of return values from target end_io function.
+ */
+#define DM_ENDIO_INCOMPLETE 1
+
+/*
+ * Definitions of return values from target map function.
+ */
+#define DM_MAPIO_SUBMITTED 0
+#define DM_MAPIO_REMAPPED 1
+
+/*
* Suspend feature flags
*/
#define DM_SUSPEND_LOCKFS_FLAG (1 << 0)