From: xie xingguo <xie.xingguo@zte.com.cn>
Date: Fri, 3 Jun 2016 01:39:25 +0000 (+0800)
Subject: mds: fix potential division-by-zero error
X-Git-Tag: v11.0.0~174^2~1
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=8ce5132ac284d15eb8ed873981b9c5080b6d5e5d;p=ceph.git

mds: fix potential division-by-zero error

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

diff --git a/src/mds/MDCache.cc b/src/mds/MDCache.cc
index c2473d8cfc3..da1ad902e43 100644
--- a/src/mds/MDCache.cc
+++ b/src/mds/MDCache.cc
@@ -7223,8 +7223,9 @@ void MDCache::check_memory_usage()
 
   // check client caps
   int num_inodes = inode_map.size();
-  float caps_per_inode = (float)num_caps / (float)num_inodes;
-  //float cap_rate = (float)num_inodes_with_caps / (float)inode_map.size();
+  float caps_per_inode = 0.0;
+  if (num_inodes)
+    caps_per_inode = (float)num_caps / (float)num_inodes;
 
   dout(2) << "check_memory_usage"
 	   << " total " << last.get_total()