dm ioctl: allow message to return data

[karo-tx-linux.git] / include / uapi / linux / dm-ioctl.h

diff --git a/include/uapi/linux/dm-ioctl.h b/include/uapi/linux/dm-ioctl.h
index b8a6bddf07275dc2ef4881bf0ec88f7e7032a55c..7e75b6fd8d458f06550198a3341e8fc03af9a4aa 100644 (file)
--- a/include/uapi/linux/dm-ioctl.h
+++ b/include/uapi/linux/dm-ioctl.h
@@ -336,4 +336,9 @@ enum {
  */
 #define DM_SECURE_DATA_FLAG            (1 << 15) /* In */
 
+/*
+ * If set, a message generated output data.
+ */
+#define DM_DATA_OUT_FLAG               (1 << 16) /* Out */
+
 #endif                         /* _LINUX_DM_IOCTL_H */