1 files changed, 3 insertions, 4 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index f6f7821d43a5..535bd0fe1a71 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1410,10 +1410,9 @@ struct btrfs_root *open_ctree(struct super_block *sb,
 
         BTRFS_I(fs_info->btree_inode)->io_tree.ops = &btree_extent_io_ops;
 
-        extent_io_tree_init(&fs_info->free_space_cache,
-                             fs_info->btree_inode->i_mapping, GFP_NOFS);
-        extent_io_tree_init(&fs_info->block_group_cache,
-                             fs_info->btree_inode->i_mapping, GFP_NOFS);
+        spin_lock_init(&fs_info->block_group_cache_lock);
+        fs_info->block_group_cache_tree.rb_node = NULL;
+
         extent_io_tree_init(&fs_info->pinned_extents,
                              fs_info->btree_inode->i_mapping, GFP_NOFS);
         extent_io_tree_init(&fs_info->pending_del,