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mmc: switch to blk_mq_alloc_disk

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Use the blk_mq_alloc_disk to allocate the request_queue and gendisk
together.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20210616053934.880951-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-06-16 07:39:34 +02:00 committed by Jens Axboe
parent 249cda3325
commit 607d968a57
3 changed files with 14 additions and 25 deletions
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14
drivers/mmc/core/block.c
View File

@ -2319,27 +2319,21 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
*/
md->read_only = mmc_blk_readonly(card);
md->disk = alloc_disk(perdev_minors);
if (md->disk == NULL) {
ret = -ENOMEM;
md->disk = mmc_init_queue(&md->queue, card);
if (IS_ERR(md->disk)) {
ret = PTR_ERR(md->disk);
goto err_kfree;
}
INIT_LIST_HEAD(&md->part);
INIT_LIST_HEAD(&md->rpmbs);
md->usage = 1;
ret = mmc_init_queue(&md->queue, card);
if (ret)
goto err_putdisk;
md->queue.blkdata = md;
md->disk->major = MMC_BLOCK_MAJOR;
md->disk->first_minor = devidx * perdev_minors;
md->disk->fops = &mmc_bdops;
md->disk->private_data = md;
md->disk->queue = md->queue.queue;
md->parent = parent;
set_disk_ro(md->disk, md->read_only || default_ro);
md->disk->flags = GENHD_FL_EXT_DEVT;
@ -2388,8 +2382,6 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
return md;
err_putdisk:
put_disk(md->disk);
err_kfree:
kfree(md);
out:

23
drivers/mmc/core/queue.c
View File

@ -424,9 +424,10 @@ static inline bool mmc_merge_capable(struct mmc_host *host)
*
* Initialise a MMC card request queue.
*/
int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card)
struct gendisk *mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card)
{
struct mmc_host *host = card->host;
struct gendisk *disk;
int ret;
mq->card = card;
@ -464,26 +465,22 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card)
ret = blk_mq_alloc_tag_set(&mq->tag_set);
if (ret)
return ret;
return ERR_PTR(ret);
mq->queue = blk_mq_init_queue(&mq->tag_set);
if (IS_ERR(mq->queue)) {
ret = PTR_ERR(mq->queue);
goto free_tag_set;
disk = blk_mq_alloc_disk(&mq->tag_set, mq);
if (IS_ERR(disk)) {
blk_mq_free_tag_set(&mq->tag_set);
return disk;
}
mq->queue = disk->queue;
if (mmc_host_is_spi(host) && host->use_spi_crc)
blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, mq->queue);
mq->queue->queuedata = mq;
blk_queue_rq_timeout(mq->queue, 60 * HZ);
mmc_setup_queue(mq, card);
return 0;
free_tag_set:
blk_mq_free_tag_set(&mq->tag_set);
return ret;
return disk;
}
void mmc_queue_suspend(struct mmc_queue *mq)

2
drivers/mmc/core/queue.h
View File

@ -94,7 +94,7 @@ struct mmc_queue {
struct work_struct complete_work;
};
extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *);
struct gendisk *mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card);
extern void mmc_cleanup_queue(struct mmc_queue *);
extern void mmc_queue_suspend(struct mmc_queue *);
extern void mmc_queue_resume(struct mmc_queue *);