[PATCH] Add support for writing aggregate bandwidth log

This is the same that is shown while fio is running, it can be useful
for graphing purposes as well.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/init.c b/init.c
index e0e1d9f..365a8b2 100644
--- a/init.c
+++ b/init.c
@@ -532,7 +532,7 @@
 FILE *f_err = NULL;
 
 static int write_lat_log = 0;
-static int write_bw_log = 0;
+int write_bw_log = 0;
 
 /*
  * Return a free job structure.