Re: [PATCH 08/30] mspro: use blk_mq_alloc_disk
From: Ulf Hansson <hidden>
Date: 2021-06-03 15:38:30
Also in:
ceph-devel, dm-devel, linux-block, linux-mmc, linux-s390, virtualization, xen-devel
On Wed, 2 Jun 2021 at 08:54, Christoph Hellwig [off-list ref] wrote:
Use the blk_mq_alloc_disk API to simplify the gendisk and request_queue allocation. Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Ulf Hansson <redacted> Kind regards Uffe
quoted hunk ↗ jump to hunk
--- drivers/memstick/core/mspro_block.c | 26 +++++++++++--------------- 1 file changed, 11 insertions(+), 15 deletions(-)diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c index cf7fe0d58ee7..22778d0e24f5 100644 --- a/drivers/memstick/core/mspro_block.c +++ b/drivers/memstick/core/mspro_block.c@@ -1205,21 +1205,17 @@ static int mspro_block_init_disk(struct memstick_dev *card) if (disk_id < 0) return disk_id; - msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT); - if (!msb->disk) { - rc = -ENOMEM; + rc = blk_mq_alloc_sq_tag_set(&msb->tag_set, &mspro_mq_ops, 2, + BLK_MQ_F_SHOULD_MERGE); + if (rc) goto out_release_id; - } - msb->queue = blk_mq_init_sq_queue(&msb->tag_set, &mspro_mq_ops, 2, - BLK_MQ_F_SHOULD_MERGE); - if (IS_ERR(msb->queue)) { - rc = PTR_ERR(msb->queue); - msb->queue = NULL; - goto out_put_disk; + msb->disk = blk_mq_alloc_disk(&msb->tag_set, card); + if (IS_ERR(msb->disk)) { + rc = PTR_ERR(msb->disk); + goto out_free_tag_set; } - - msb->queue->queuedata = card; + msb->queue = msb->disk->queue; blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES); blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);@@ -1228,10 +1224,10 @@ static int mspro_block_init_disk(struct memstick_dev *card) msb->disk->major = major; msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT; + msb->disk->minors = 1 << MSPRO_BLOCK_PART_SHIFT; msb->disk->fops = &ms_block_bdops; msb->usage_count = 1; msb->disk->private_data = msb; - msb->disk->queue = msb->queue; sprintf(msb->disk->disk_name, "mspblk%d", disk_id);@@ -1247,8 +1243,8 @@ static int mspro_block_init_disk(struct memstick_dev *card) msb->active = 1; return 0; -out_put_disk: - put_disk(msb->disk); +out_free_tag_set: + blk_mq_free_tag_set(&msb->tag_set); out_release_id: mutex_lock(&mspro_block_disk_lock); idr_remove(&mspro_block_disk_idr, disk_id); --2.30.2