From: xiexingguo <xie.xingguo@zte.com.cn>
Date: Tue, 11 Oct 2016 14:14:22 +0000 (+0800)
Subject: os/bluestore: fix race conditon during blob spliting
X-Git-Tag: v11.1.0~663^2~2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=d300929ae920214e7409c61e9f309d4ef328a52b;p=ceph.git

os/bluestore: fix race conditon during blob spliting

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

diff --git a/src/os/bluestore/BlueStore.h b/src/os/bluestore/BlueStore.h
index 0bfc7d75a8f..95f190162db 100644
--- a/src/os/bluestore/BlueStore.h
+++ b/src/os/bluestore/BlueStore.h
@@ -437,6 +437,7 @@ public:
     }
 
     bool can_split() const {
+      std::lock_guard<std::recursive_mutex> l(shared_blob->bc.cache->lock);
       // splitting a BufferSpace writing list is too hard; don't try.
       return shared_blob->bc.writing.empty() && get_blob().can_split();
     }