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| author | Jens Axboe <axboe@fb.com> | 2017-01-12 10:04:45 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-01-17 10:04:09 -0700 |
| commit | fd2d332677c687ca90c12a47d6c377c547100b56 (patch) | |
| tree | 1a1c0e04dc9828d4b7475ae9597ba75aadbd4724 /block | |
| parent | cc71a6f43886a8af57dbbce2a45b4b2aaf570fe6 (diff) | |
| download | linux-0-day-fd2d332677c687ca90c12a47d6c377c547100b56.tar.gz linux-0-day-fd2d332677c687ca90c12a47d6c377c547100b56.tar.xz | |
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>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-mq.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index fcdeadc557530..d40be641f3d59 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); |