* io.c (rb_io_rewind): remove fsync() for Windows to improve the

performance.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42560 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Thu Aug 15 16:59:56 2013  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* io.c (rb_io_rewind): remove fsync() for Windows to improve the
+	  performance.
+
 Thu Aug 15 16:30:23 2013  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* test/fileutils/test_fileutils.rb (TestFileUtils#test_rmdir):

io.c

@@ -1654,11 +1654,6 @@ rb_io_rewind(VALUE io)
 
     GetOpenFile(io, fptr);
     if (io_seek(fptr, 0L, 0) < 0 && errno) rb_sys_fail_path(fptr->pathv);
-#ifdef _WIN32
-    if (GetFileType((HANDLE)rb_w32_get_osfhandle(fptr->fd)) == FILE_TYPE_DISK) {
-	fsync(fptr->fd);
-    }
-#endif
     if (io == ARGF.current_file) {
 	ARGF.lineno -= fptr->lineno;
     }