On Thu, Jan 26, 2017 at 11:57:36AM -0700, Jens Axboe wrote:

It's against my for-4.11/block, which you were running under Christoph's
patches. Maybe he's using an older version? In any case, should be
pretty trivial for you to hand apply. Just ensure that .flags is set to
0 for the common cases, and inherit 'flags' when it is passed in.

No, the flush op cleanups you asked for last round create a conflict
with your patch.  They should be trivial to fix, though.