Btrfs: Add back metadata checksumming

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index d1c6f023a302..1af0a966f85b 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -310,9 +310,11 @@ struct btrfs_fs_info {
         struct extent_buffer *sb_buffer;
         struct super_block *sb;
         struct inode *btree_inode;
+        spinlock_t hash_lock;
         struct mutex trans_mutex;
         struct mutex fs_mutex;
         struct list_head trans_list;
+        struct list_head hashers;
         struct list_head dead_roots;
         struct delayed_work trans_work;
         struct kobject super_kobj;