os/bluestore/NVMEDevice: remove unused variables ref

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

diff --git a/src/os/bluestore/NVMEDevice.cc b/src/os/bluestore/NVMEDevice.cc
index 73a959c9178e22d81ce37405732960f6c94da9d3..2d2f2bf17cc209b0c580b4d3dc3348440112934b 100644 (file)
--- a/src/os/bluestore/NVMEDevice.cc
+++ b/src/os/bluestore/NVMEDevice.cc
@@ -104,7 +104,6 @@ class SharedDriverData {
   friend class AioCompletionThread;
 
   bool aio_stop = false;
-  int ref = 1;
   void _aio_thread();
   void _aio_start() {
     aio_thread.create("nvme_aio_thread");