os/bluestore: fix race condition

The empty() method also needs to be called under the protection of lock.

Signed-off-by: xie xingguo <xie.xingguo@zte.com.cn>

diff --git a/src/os/bluestore/BlueStore.h b/src/os/bluestore/BlueStore.h
index 16dad8409f88246476476f73ba94fc95585826d0..7ef031bea4d42244c71b46fa0c0fa9f7bc7d445f 100644 (file)
--- a/src/os/bluestore/BlueStore.h
+++ b/src/os/bluestore/BlueStore.h
@@ -378,6 +378,7 @@ public:
     }
 
     bool empty() {
+      std::lock_guard<std::mutex> l(lock);
       return uset.empty();
     }
   };