1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index e1707de043ae..ca6d2acc5eb7 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -64,6 +64,7 @@ typedef int (*dm_request_endio_fn) (struct dm_target *ti,
                                     union map_info *map_context);
 
 typedef void (*dm_presuspend_fn) (struct dm_target *ti);
+typedef void (*dm_presuspend_undo_fn) (struct dm_target *ti);
 typedef void (*dm_postsuspend_fn) (struct dm_target *ti);
 typedef int (*dm_preresume_fn) (struct dm_target *ti);
 typedef void (*dm_resume_fn) (struct dm_target *ti);
@@ -145,6 +146,7 @@ struct target_type {
         dm_endio_fn end_io;
         dm_request_endio_fn rq_end_io;
         dm_presuspend_fn presuspend;
+        dm_presuspend_undo_fn presuspend_undo;
         dm_postsuspend_fn postsuspend;
         dm_preresume_fn preresume;
         dm_resume_fn resume;