From: Linus Walleij Date: Fri, 19 May 2017 13:37:27 +0000 (+0200) Subject: mmc: block: remove req back pointer X-Git-Tag: v4.14-rc1~618^2~54 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=67e69d5220c904238f94bb2e6001d7c590f5a0bb;p=platform%2Fkernel%2Flinux-rpi.git mmc: block: remove req back pointer Just as we can use blk_mq_rq_from_pdu() to get the per-request tag we can use blk_mq_rq_to_pdu() to get a request from a tag. Introduce a static inline helper so we are on the clear what is happening. Suggested-by: Christoph Hellwig Signed-off-by: Linus Walleij Signed-off-by: Ulf Hansson --- diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index e973798..553ab4d 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -1366,7 +1366,7 @@ static enum mmc_blk_status mmc_blk_err_check(struct mmc_card *card, struct mmc_queue_req *mq_mrq = container_of(areq, struct mmc_queue_req, areq); struct mmc_blk_request *brq = &mq_mrq->brq; - struct request *req = mq_mrq->req; + struct request *req = mmc_queue_req_to_req(mq_mrq); int need_retune = card->host->need_retune; bool ecc_err = false; bool gen_err = false; @@ -1473,7 +1473,7 @@ static void mmc_blk_data_prep(struct mmc_queue *mq, struct mmc_queue_req *mqrq, struct mmc_blk_data *md = mq->blkdata; struct mmc_card *card = md->queue.card; struct mmc_blk_request *brq = &mqrq->brq; - struct request *req = mqrq->req; + struct request *req = mmc_queue_req_to_req(mqrq); /* * Reliable writes are used to implement Forced Unit Access and @@ -1578,7 +1578,7 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq, { u32 readcmd, writecmd; struct mmc_blk_request *brq = &mqrq->brq; - struct request *req = mqrq->req; + struct request *req = mmc_queue_req_to_req(mqrq); struct mmc_blk_data *md = mq->blkdata; bool do_rel_wr, do_data_tag; @@ -1760,7 +1760,7 @@ static void mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *new_req) */ mq_rq = container_of(old_areq, struct mmc_queue_req, areq); brq = &mq_rq->brq; - old_req = mq_rq->req; + old_req = mmc_queue_req_to_req(mq_rq); type = rq_data_dir(old_req) == READ ? MMC_BLK_READ : MMC_BLK_WRITE; mmc_queue_bounce_post(mq_rq); diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c index d6c7b4c..ba689a2 100644 --- a/drivers/mmc/core/queue.c +++ b/drivers/mmc/core/queue.c @@ -184,8 +184,6 @@ static int mmc_init_request(struct request_queue *q, struct request *req, struct mmc_card *card = mq->card; struct mmc_host *host = card->host; - mq_rq->req = req; - if (card->bouncesz) { mq_rq->bounce_buf = kmalloc(card->bouncesz, gfp); if (!mq_rq->bounce_buf) @@ -223,8 +221,6 @@ static void mmc_exit_request(struct request_queue *q, struct request *req) kfree(mq_rq->sg); mq_rq->sg = NULL; - - mq_rq->req = NULL; } /** @@ -373,12 +369,13 @@ unsigned int mmc_queue_map_sg(struct mmc_queue *mq, struct mmc_queue_req *mqrq) unsigned int sg_len; size_t buflen; struct scatterlist *sg; + struct request *req = mmc_queue_req_to_req(mqrq); int i; if (!mqrq->bounce_buf) - return blk_rq_map_sg(mq->queue, mqrq->req, mqrq->sg); + return blk_rq_map_sg(mq->queue, req, mqrq->sg); - sg_len = blk_rq_map_sg(mq->queue, mqrq->req, mqrq->bounce_sg); + sg_len = blk_rq_map_sg(mq->queue, req, mqrq->bounce_sg); mqrq->bounce_sg_len = sg_len; @@ -400,7 +397,7 @@ void mmc_queue_bounce_pre(struct mmc_queue_req *mqrq) if (!mqrq->bounce_buf) return; - if (rq_data_dir(mqrq->req) != WRITE) + if (rq_data_dir(mmc_queue_req_to_req(mqrq)) != WRITE) return; sg_copy_to_buffer(mqrq->bounce_sg, mqrq->bounce_sg_len, @@ -416,7 +413,7 @@ void mmc_queue_bounce_post(struct mmc_queue_req *mqrq) if (!mqrq->bounce_buf) return; - if (rq_data_dir(mqrq->req) != READ) + if (rq_data_dir(mmc_queue_req_to_req(mqrq)) != READ) return; sg_copy_from_buffer(mqrq->bounce_sg, mqrq->bounce_sg_len, diff --git a/drivers/mmc/core/queue.h b/drivers/mmc/core/queue.h index dfe481a..2793020 100644 --- a/drivers/mmc/core/queue.h +++ b/drivers/mmc/core/queue.h @@ -12,6 +12,13 @@ static inline struct mmc_queue_req *req_to_mmc_queue_req(struct request *rq) return blk_mq_rq_to_pdu(rq); } +struct mmc_queue_req; + +static inline struct request *mmc_queue_req_to_req(struct mmc_queue_req *mqr) +{ + return blk_mq_rq_from_pdu(mqr); +} + struct task_struct; struct mmc_blk_data; struct mmc_blk_ioc_data; @@ -26,7 +33,6 @@ struct mmc_blk_request { }; struct mmc_queue_req { - struct request *req; struct mmc_blk_request brq; struct scatterlist *sg; char *bounce_buf;