1 files changed, 2 insertions, 4 deletions

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index bcd14ebccae1..1316139bf9e8 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2894,10 +2894,6 @@ static int read_one_chunk(struct btrfs_root *root, struct btrfs_key *key,
                 free_extent_map(em);
         }
 
-        map = kzalloc(sizeof(*map), GFP_NOFS);
-        if (!map)
-                return -ENOMEM;
-
         em = alloc_extent_map(GFP_NOFS);
         if (!em)
                 return -ENOMEM;
@@ -3106,6 +3102,8 @@ int btrfs_read_sys_array(struct btrfs_root *root)
         if (!sb)
                 return -ENOMEM;
         btrfs_set_buffer_uptodate(sb);
+        btrfs_set_buffer_lockdep_class(sb, 0);
+
         write_extent_buffer(sb, super_copy, 0, BTRFS_SUPER_INFO_SIZE);
         array_size = btrfs_super_sys_array_size(super_copy);