dm crypt: always disable discard_zeroes_data

[pandora-kernel.git] / include / linux / device-mapper.h

diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 3fa1f3d..99e3e50 100644 (file)
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -197,6 +197,11 @@ struct dm_target {
         * whether or not its underlying devices have support.
         */
        unsigned discards_supported:1;
+
+       /*
+        * Set if this target does not return zeroes on discarded blocks.
+        */
+       unsigned discard_zeroes_data_unsupported:1;
 };
 
 /* Each target can link one of these into the table */