block: introduce blk_rq_is_passthrough

This can be used to check for fs vs non-fs requests and basically
removes all knowledge of BLOCK_PC specific from the block layer,
as well as preparing for removing the cmd_type field in struct request.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/block/mq-deadline.c b/block/mq-deadline.c
index d93ec713fa62..49583536698c 100644
--- a/block/mq-deadline.c
+++ b/block/mq-deadline.c
@@ -398,7 +398,7 @@ static void dd_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
         if (blk_mq_sched_bypass_insert(hctx, rq))
                 return;
 
-        if (at_head || rq->cmd_type != REQ_TYPE_FS) {
+        if (at_head || blk_rq_is_passthrough(rq)) {
                 if (at_head)
                         list_add(&rq->queuelist, &dd->dispatch);
                 else