diff --git a/data b/data
new file mode 120000
index 000000000..af1f36392
--- /dev/null
+++ b/data
@@ -0,0 +1 @@
+/home/PJLAB/limengzhang/Downloads/datasets/
\ No newline at end of file
diff --git a/mmseg/models/decode_heads/knet_head.py b/mmseg/models/decode_heads/knet_head.py
index ae7afc96b..82d3a2807 100644
--- a/mmseg/models/decode_heads/knet_head.py
+++ b/mmseg/models/decode_heads/knet_head.py
@@ -413,6 +413,9 @@ class IterativeDecodeHead(BaseDecodeHead):
 
     def __init__(self, num_stages, kernel_generate_head, kernel_update_head,
                  **kwargs):
+        # ``IterativeDecodeHead`` would skip initialization of
+        # ``BaseDecodeHead`` which would be called when building
+        # ``self.kernel_generate_head``.
         super(BaseDecodeHead, self).__init__(**kwargs)
         assert num_stages == len(kernel_update_head)
         self.num_stages = num_stages