blk-mq: add support for carrying internal tag information in blk_qc_t
No functional change in this patch, just in preparation for having
two types of tags available to the block layer for a single request.
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
diff --git a/block/blk-mq.c b/block/blk-mq.c
index fcdeadc..d40be64 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1308,6 +1308,11 @@ static struct request *blk_mq_map_request(struct request_queue *q,
return rq;
}
+static blk_qc_t request_to_qc_t(struct blk_mq_hw_ctx *hctx, struct request *rq)
+{
+ return blk_tag_to_qc_t(rq->tag, hctx->queue_num, false);
+}
+
static void blk_mq_try_issue_directly(struct request *rq, blk_qc_t *cookie)
{
int ret;
@@ -1318,7 +1323,7 @@ static void blk_mq_try_issue_directly(struct request *rq, blk_qc_t *cookie)
.list = NULL,
.last = 1
};
- blk_qc_t new_cookie = blk_tag_to_qc_t(rq->tag, hctx->queue_num);
+ blk_qc_t new_cookie = request_to_qc_t(hctx, rq);
if (blk_mq_hctx_stopped(hctx))
goto insert;
@@ -1387,7 +1392,7 @@ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio)
wbt_track(&rq->issue_stat, wb_acct);
- cookie = blk_tag_to_qc_t(rq->tag, data.hctx->queue_num);
+ cookie = request_to_qc_t(data.hctx, rq);
if (unlikely(is_flush_fua)) {
blk_mq_bio_to_request(rq, bio);
@@ -1496,7 +1501,7 @@ static blk_qc_t blk_sq_make_request(struct request_queue *q, struct bio *bio)
wbt_track(&rq->issue_stat, wb_acct);
- cookie = blk_tag_to_qc_t(rq->tag, data.hctx->queue_num);
+ cookie = request_to_qc_t(data.hctx, rq);
if (unlikely(is_flush_fua)) {
blk_mq_bio_to_request(rq, bio);