librbd: fix were_all_throttled() to avoid incorrect ret-value

Fixes: http://tracker.ceph.com/issues/38504
Signed-off-by: Dongsheng Yang <dongsheng.yang@easystack.cn>

diff --git a/src/librbd/io/ImageDispatchSpec.h b/src/librbd/io/ImageDispatchSpec.h
index 7cdc078a0886c74bd372f5dbb4f591df01a87a45..dc6a709f05ec3ba5607943de8f1c5aada184d57f 100644 (file)
--- a/src/librbd/io/ImageDispatchSpec.h
+++ b/src/librbd/io/ImageDispatchSpec.h
@@ -140,7 +140,7 @@ public:
   }
 
   bool were_all_throttled() {
-    return m_throttled_flag & RBD_QOS_MASK;
+    return (m_throttled_flag & RBD_QOS_MASK) == RBD_QOS_MASK;
   }
 
 private: