Btrfs: skip building backref tree for uuid and quota tree when doing balance relocation

Quota tree and UUID Tree is only cowed, they can not be snapshoted.

Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 7cdc76007c6c..0a3f02562053 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -571,7 +571,9 @@ static int is_cowonly_root(u64 root_objectid)
             root_objectid == BTRFS_CHUNK_TREE_OBJECTID ||
             root_objectid == BTRFS_DEV_TREE_OBJECTID ||
             root_objectid == BTRFS_TREE_LOG_OBJECTID ||
-            root_objectid == BTRFS_CSUM_TREE_OBJECTID)
+            root_objectid == BTRFS_CSUM_TREE_OBJECTID ||
+            root_objectid == BTRFS_UUID_TREE_OBJECTID ||
+            root_objectid == BTRFS_QUOTA_TREE_OBJECTID)
                 return 1;
         return 0;
 }