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 <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Christoph Hellwig 2017-01-31 16:57:29 +01:00 • committed by Jens Axboe
commit 57292b58dd
21 changed files with 59 additions and 53 deletions

View file

@ -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