1 files changed, 2 insertions, 0 deletions

diff --git a/fs/mount.h b/fs/mount.h
index e4ecf59c9353..7071d8fa9307 100644
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -19,6 +19,8 @@ struct mount {
 #endif
         struct list_head mnt_mounts;    /* list of children, anchored here */
         struct list_head mnt_child;     /* and going through their mnt_child */
+        /* yet to be moved - up to mnt_slave */
+        struct vfsmount *mnt_master;    /* slave is on master->mnt_slave_list */
 };
 
 static inline struct mount *real_mount(struct vfsmount *mnt)