3 files changed, 8 insertions, 4 deletions
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 32a4423710f5..4427e0454051 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -191,6 +191,12 @@ struct dm_target {
        /* Used to provide an error string from the ctr */
        char *error;
+        /*
+         * Set if this target needs to receive discards regardless of
+         * whether or not its underlying devices have support.
+         */
+        unsigned discards_supported:1;
 };
 /* Each target can link one of these into the table */
diff --git a/include/linux/dm-io.h b/include/linux/dm-io.h
index 5c9186b93fff..f4b0aa3126f5 100644
--- a/include/linux/dm-io.h
+++ b/include/linux/dm-io.h
@@ -69,8 +69,7 @@ struct dm_io_request {
 *
 * Create/destroy may block.
 */
-struct dm_io_client *dm_io_client_create(unsigned num_pages);
+struct dm_io_client *dm_io_client_create(void);
-int dm_io_client_resize(unsigned num_pages, struct dm_io_client *client);
 void dm_io_client_destroy(struct dm_io_client *client);
 /*
diff --git a/include/linux/dm-kcopyd.h b/include/linux/dm-kcopyd.h
index 5db216311695..298d587e349b 100644
--- a/include/linux/dm-kcopyd.h
+++ b/include/linux/dm-kcopyd.h
@@ -25,8 +25,7 @@
 * To use kcopyd you must first create a dm_kcopyd_client object.
 */
 struct dm_kcopyd_client;
-int dm_kcopyd_client_create(unsigned num_pages,
+struct dm_kcopyd_client *dm_kcopyd_client_create(void);
-                            struct dm_kcopyd_client **result);
 void dm_kcopyd_client_destroy(struct dm_kcopyd_client *kc);
 /*