+/*
+ * Fill offset and start time into the buffer content, to prevent too
+ * easy compressible data for simple de-dupe attempts.
+ */
+static void small_content_scramble(struct io_u *io_u)
+{
+ void *end;
+
+ *((unsigned long long *) io_u->xfer_buf) = io_u->offset;
+ end = io_u->xfer_buf + io_u->xfer_buflen - sizeof(io_u->start_time);
+ memcpy(end, &io_u->start_time, sizeof(io_u->start_time));
+}
+