filestore: fix peek_queue for OpSequencer

Fixes: #13209
Signed-off-by: Xinze Chi <xinze@xsky.com>
(cherry picked from commit 5f7b3f5cde779f1300a35a04df2cdb1299f55472)

diff --git a/src/os/FileStore.h b/src/os/FileStore.h
index af1fb8d8121258edc278839324c0c89b74650f91..a9291b743c9bc3b214d8bb1cdb86fa04a6fa2239 100644 (file)
--- a/src/os/FileStore.h
+++ b/src/os/FileStore.h
@@ -258,6 +258,7 @@ private:
       q.push_back(o);
     }
     Op *peek_queue() {
+      Mutex::Locker l(qlock);
       assert(apply_lock.is_locked());
       return q.front();
     }