On Mon, Mar 13, 2017 at 08:52:54PM +0000, Bart Van Assche wrote:

quoted

-	if (((plug && !blk_queue_nomerges(q)) || is_sync) &&
-	    !(data.hctx->flags & BLK_MQ_F_DEFER_ISSUE)) {
+	if (((plug && !blk_queue_nomerges(q)) || is_sync)) {

A minor comment: due to this change the outer pair of parentheses
became superfluous. Please consider removing these.

The last patch in the series removes the statement in this form. But
if I have to respin the series for some reason I'll make sure it
gets removed here already.