From: xie xingguo <xie.xingguo@zte.com.cn>
Date: Wed, 6 Jul 2016 03:43:35 +0000 (+0800)
Subject: os/bluestore: add sanity check for get_free() method
X-Git-Tag: ses5-milestone5~437^2~2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=6147ea0f2935c1e50b40de9e810b3cf554078241;p=ceph.git

os/bluestore: add sanity check for get_free() method

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

diff --git a/src/os/bluestore/BitMapAllocator.cc b/src/os/bluestore/BitMapAllocator.cc
index 04f5dc70025c..d42093e79b1f 100644
--- a/src/os/bluestore/BitMapAllocator.cc
+++ b/src/os/bluestore/BitMapAllocator.cc
@@ -152,6 +152,7 @@ int BitMapAllocator::release(
 
 uint64_t BitMapAllocator::get_free()
 {
+  assert(m_bit_alloc->size() >= m_bit_alloc->get_used_blocks());
   return ((
     m_bit_alloc->size() - m_bit_alloc->get_used_blocks()) *
     m_block_size);