From 5f7b3f5cde779f1300a35a04df2cdb1299f55472 Mon Sep 17 00:00:00 2001
From: Xinze Chi <xinze@xksy.com>
Date: Wed, 23 Sep 2015 19:26:00 +0800
Subject: [PATCH] filestore: fix peek_queue for OpSequencer

Fixes: #13209
Signed-off-by: Xinze Chi <xinze@xsky.com>
---
 src/os/FileStore.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/os/FileStore.h b/src/os/FileStore.h
index d45dc01a6a8..4ea23b400d7 100644
--- a/src/os/FileStore.h
+++ b/src/os/FileStore.h
@@ -257,6 +257,7 @@ private:
       q.push_back(o);
     }
     Op *peek_queue() {
+      Mutex::Locker l(qlock);
       assert(apply_lock.is_locked());
       return q.front();
     }