From fb51d64d19ca03af90e52eb01238e25b4512dc30 Mon Sep 17 00:00:00 2001
From: xie xingguo <xie.xingguo@zte.com.cn>
Date: Mon, 27 Jun 2016 21:44:12 +0800
Subject: [PATCH] os/bluestore: audit buffer bytes before applying delta

Signed-off-by: xie xingguo <xie.xingguo@zte.com.cn>
---
 src/os/bluestore/BlueStore.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index e75b7a155cf0..c4acf8e76be0 100644
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -683,6 +683,7 @@ void BlueStore::TwoQCache::_adjust_buffer_size(Buffer *b, int64_t delta)
 {
   dout(20) << __func__ << " delta " << delta << " on " << *b << dendl;
   if (!b->is_empty()) {
+    assert((int64_t)buffer_bytes + delta >= 0);
     buffer_bytes += delta;
   }
 }
-- 
2.47.3