From d69764879ef0c2eca973479f2dd3cccbaefc8281 Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Sun, 20 Jul 2014 18:36:52 +0900
Subject: [PATCH] Fix regression 100% CPU utility when -V is used and download
 is multi-file BT

This is regression of a3426821c8a7f9cf8d80a81726157d4eb844f661
---
 src/MultiDiskAdaptor.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/MultiDiskAdaptor.cc b/src/MultiDiskAdaptor.cc
index 690ce317e..ec125301b 100644
--- a/src/MultiDiskAdaptor.cc
+++ b/src/MultiDiskAdaptor.cc
@@ -394,6 +394,10 @@ ssize_t MultiDiskAdaptor::readData
       auto nread = (*i)->getDiskWriter()->readData(data+(len-rem),
                                                    readLength, fileOffset);
 
+      if(nread == 0) {
+        return totalReadLength;
+      }
+
       totalReadLength += nread;
 
       if(dropCache) {