From c673d9d93539cb353fbbe671f41bc0302359b765 Mon Sep 17 00:00:00 2001
From: Takeshi Nakatani <ggtakec@gmail.com>
Date: Sun, 8 Nov 2015 04:55:17 +0000
Subject: [PATCH] File opened with O_TRUNC is not flushed - changed #291

---
 src/s3fs.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/s3fs.cpp b/src/s3fs.cpp
index 16c9025..62ba947 100644
--- a/src/s3fs.cpp
+++ b/src/s3fs.cpp
@@ -2026,8 +2026,10 @@ static int s3fs_open(const char* path, struct fuse_file_info* fi)
   }
 
   if((unsigned int)fi->flags & O_TRUNC){
-    st.st_size = 0;
-    needs_flush = true;
+    if(0 != st.st_size){
+      st.st_size = 0;
+      needs_flush = true;
+    }
   }
   if(!S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)){
     st.st_mtime = -1;