On Thu, Jul 21, 2022 at 07:16:26AM +0200, Christoph Hellwig wrote: > REQ_PREFLUSH is turned into REQ_OP_FLUSH by the flush state machine > and thus never seen by a blk-mq based driver. > > Signed-off-by: Christoph Hellwig <hch@xxxxxx> > --- Reviewed-by: Ming Lei <ming.lei@xxxxxxxxxx> -- Ming