From: Frederic Suter <frederic.suter@cc.in2p3.fr>
Date: Fri, 25 Sep 2015 14:24:01 +0000 (+0200)
Subject: you can overwrite part of a file without mofiying its size
X-Git-Tag: v3_12~117^2~1
X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/706eb57e96a426be797b6552144fb7b2a21fcc28

you can overwrite part of a file without mofiying its size
---

diff --git a/src/surf/storage_n11.cpp b/src/surf/storage_n11.cpp
index 42fef37138..6baacc2658 100644
--- a/src/surf/storage_n11.cpp
+++ b/src/surf/storage_n11.cpp
@@ -332,8 +332,10 @@ void StorageN11Model::updateActionsState(double /*now*/, double delta)
 
       action->p_storage->m_usedSize += incr; // disk usage
       action->p_file->current_position+= incr; // current_position
-      //  which becomes the new file size
-      action->p_file->size = action->p_file->current_position ;
+      //  which becomes the new file size only if it's greater than the current
+      // file size
+      if (action->p_file->current_position > action->p_file->size)
+        action->p_file->size = action->p_file->current_position ;
 
       sg_size_t *psize = xbt_new(sg_size_t,1);
       *psize = action->p_file->size;