Btrfs: use a btree inode instead of sb_getblk

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

1 files changed, 5 insertions, 3 deletions

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 67659b6ce962..8f07f462236a 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -474,6 +474,8 @@ static int btrfs_fill_super(struct super_block * sb, void * data, int silent)
         disk_super = (struct btrfs_super_block *)bh->b_data;
         root = open_ctree(sb, bh, disk_super);
         sb->s_fs_info = root;
+        disk_super = root->fs_info->disk_super;
+
         if (!root) {
                 printk("btrfs: open_ctree failed\n");
                 return -EIO;
@@ -734,15 +736,15 @@ static int btrfs_sync_fs(struct super_block *sb, int wait)
         struct btrfs_trans_handle *trans;
         struct btrfs_root *root;
         int ret;
+        root = btrfs_sb(sb);
 
         sb->s_dirt = 0;
         if (!wait) {
-                filemap_flush(sb->s_bdev->bd_inode->i_mapping);
+                filemap_flush(root->fs_info->btree_inode->i_mapping);
                 return 0;
         }
-        filemap_write_and_wait(sb->s_bdev->bd_inode->i_mapping);
+        filemap_write_and_wait(root->fs_info->btree_inode->i_mapping);
 
-        root = btrfs_sb(sb);
         mutex_lock(&root->fs_info->fs_mutex);
         trans = btrfs_start_transaction(root, 1);
         ret = btrfs_commit_transaction(trans, root);