1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h
index 8fb740178d5d..1075f2552cfc 100644
--- a/include/linux/backing-dev-defs.h
+++ b/include/linux/backing-dev-defs.h
@@ -185,6 +185,8 @@ struct bdi_writeback {
 };
 
 struct backing_dev_info {
+        u64 id;
+        struct rb_node rb_node; /* keyed by ->id */
         struct list_head bdi_list;
         unsigned long ra_pages; /* max readahead in PAGE_SIZE units */
         unsigned long io_pages; /* max allowed IO size */