Btrfs: Return value checking in module init
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index c46bc39..ffa0287 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -347,9 +347,24 @@
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)