diff --git a/WHATS_NEW_DM b/WHATS_NEW_DM
index e89ead0d3..e76087588 100644
--- a/WHATS_NEW_DM
+++ b/WHATS_NEW_DM
@@ -1,5 +1,6 @@
 Version 1.02.110 - 
 ======================================
+  Enforce writethrough mode for cleaner policy.
   Add support for recognition and deactivation of MD devices to blkdeactivate.
   Move target status functions out of libdm-deptree.
   Correct use of max_write_behind parameter when generating raid target line.
diff --git a/libdm/libdm-deptree.c b/libdm/libdm-deptree.c
index ef283e9c0..afdce8d72 100644
--- a/libdm/libdm-deptree.c
+++ b/libdm/libdm-deptree.c
@@ -3302,7 +3302,8 @@ int dm_tree_node_add_cache_target(struct dm_tree_node *node,
 		return_0;
 
 	seg->data_block_size = data_block_size;
-	seg->flags = feature_flags;
+	/* Enforce WriteThough mode for cleaner policy */
+	seg->flags = (strcmp(policy_name, "cleaner") == 0) ? DM_CACHE_FEATURE_WRITETHROUGH : feature_flags;
 	seg->policy_name = policy_name;
 
 	/* FIXME: better validation missing */