Btrfs: Return value checking in module init

[linux-2.6-block.git] / fs / btrfs / super.c

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index c46bc39117982ac2ed96a8dbef5c660cbcf7334d..ffa02872c4d6d205037e84303177d8391fb2267e 100644 (file)
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -347,9 +347,24 @@ static int __init init_btrfs_fs(void)
        btrfs_init_transaction_sys();
        err = btrfs_init_cachep();
        if (err)
-               return err;
-       extent_map_init();
-       return register_filesystem(&btrfs_fs_type);
+               goto free_transaction_sys;
+       err = extent_map_init();
+       if (err)
+               goto free_cachep;
+
+       err = register_filesystem(&btrfs_fs_type);
+       if (err)
+               goto free_extent_map;
+       return 0;
+
+free_extent_map:
+       extent_map_exit();
+free_cachep:
+       btrfs_destroy_cachep();
+free_transaction_sys:
+       btrfs_exit_transaction_sys();
+       btrfs_exit_sysfs();
+       return err;
 }
 
 static void __exit exit_btrfs_fs(void)