On Fri, Sep 09, 2011 at 10:58:01AM +0200, Jens Axboe wrote:

quoted

   Documentation/block/writeback_cache_control.txt file is the canonical
   resource.  Implementing your driver at the make_request layer
   unfortunately means you will have to do all the hard work yourself.
 - also the call to blk_queue_flush(queue, 0); from ->make_request for
   a non-data request is completely wrong.

I noticed both of these flush/fua problems too and have fixed them up.

I still can't find any fixes in your repository.