btrfs: kill magical embedded struct superblock

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 9864cec801ed..9552afc24ef7 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1219,7 +1219,7 @@ struct btrfs_root {
          * right now this just gets used so that a root has its own devid
          * for stat.  It may be used for more later
          */
-        struct super_block anon_super;
+        dev_t anon_dev;
 };
 
 struct btrfs_ioctl_defrag_range_args {