From bc95fedbaa083d557840db6ac2cbf14e2a3eccce Mon Sep 17 00:00:00 2001
From: Kenneth Heafield <kheafiel@cluster12.lti.ece.cmu.local>
Date: Fri, 20 May 2011 16:19:04 -0400
Subject: kenlm update including being nicer to NFS

---
 klm/util/mmap.cc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'klm/util/mmap.cc')

diff --git a/klm/util/mmap.cc b/klm/util/mmap.cc
index 456ce953..e7c0643b 100644
--- a/klm/util/mmap.cc
+++ b/klm/util/mmap.cc
@@ -15,8 +15,9 @@ namespace util {
 
 scoped_mmap::~scoped_mmap() {
   if (data_ != (void*)-1) {
-    if (munmap(data_, size_)) {
-      std::cerr << "munmap failed for " << size_ << " bytes." << std::endl;
+    // Thanks Denis Filimonov for pointing on NFS likes msync first.  
+    if (msync(data_, size_, MS_SYNC) || munmap(data_, size_)) {
+      std::cerr << "msync or mmap failed for " << size_ << " bytes." << std::endl;
       abort();
     }
   }
-- 
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