From: xie xingguo <xie.xingguo@zte.com.cn>
Date: Sat, 4 Jun 2016 03:04:18 +0000 (+0800)
Subject: bluestore/BitAllocator: fix race condition
X-Git-Tag: v11.0.0~285^2~8
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=8940433f67cc38d87b3a49745ad3086b879ac860;p=ceph.git

bluestore/BitAllocator: fix race condition

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

diff --git a/src/os/bluestore/BitAllocator.cc b/src/os/bluestore/BitAllocator.cc
index 6b819b37cbb8..63c3de86c59a 100644
--- a/src/os/bluestore/BitAllocator.cc
+++ b/src/os/bluestore/BitAllocator.cc
@@ -826,6 +826,7 @@ void BitMapAreaIN::unreserve(int64_t needed, int64_t allocated)
 }
 int64_t BitMapAreaIN::get_reserved_blocks()
 {
+  std::lock_guard<std::mutex> l(m_blocks_lock); 
   return m_reserved_blocks;
 }