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rnbd: use blk_mq_alloc_disk and blk_cleanup_disk 

Use blk_mq_alloc_disk and blk_cleanup_disk to simplify the gendisk and
request_queue allocation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jack Wang <jinpu.wang@ionos.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Link: https://lore.kernel.org/r/20210602065345.355274-24-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-06-02 09:53:38 +03:00 committed by Jens Axboe
parent 195b1956b8
commit 2c6ee0ae5f
1 changed files with 8 additions and 27 deletions
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35
drivers/block/rnbd/rnbd-clt.c
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@ -1353,18 +1353,6 @@ static void rnbd_init_mq_hw_queues(struct rnbd_clt_dev *dev)
}
}
static int setup_mq_dev(struct rnbd_clt_dev *dev)
{
dev->queue = blk_mq_init_queue(&dev->sess->tag_set);
if (IS_ERR(dev->queue)) {
rnbd_clt_err(dev, "Initializing multiqueue queue failed, err: %ld\n",
PTR_ERR(dev->queue));
return PTR_ERR(dev->queue);
}
rnbd_init_mq_hw_queues(dev);
return 0;
}
static void setup_request_queue(struct rnbd_clt_dev *dev)
{
blk_queue_logical_block_size(dev->queue, dev->logical_block_size);
@ -1393,13 +1381,13 @@ static void setup_request_queue(struct rnbd_clt_dev *dev)
blk_queue_io_opt(dev->queue, dev->sess->max_io_size);
blk_queue_virt_boundary(dev->queue, SZ_4K - 1);
blk_queue_write_cache(dev->queue, dev->wc, dev->fua);
dev->queue->queuedata = dev;
}
static void rnbd_clt_setup_gen_disk(struct rnbd_clt_dev *dev, int idx)
{
dev->gd->major = rnbd_client_major;
dev->gd->first_minor = idx << RNBD_PART_BITS;
dev->gd->minors = 1 << RNBD_PART_BITS;
dev->gd->fops = &rnbd_client_ops;
dev->gd->queue = dev->queue;
dev->gd->private_data = dev;
@ -1426,24 +1414,18 @@ static void rnbd_clt_setup_gen_disk(struct rnbd_clt_dev *dev, int idx)
static int rnbd_client_setup_device(struct rnbd_clt_dev *dev)
{
int err, idx = dev->clt_device_id;
int idx = dev->clt_device_id;
dev->size = dev->nsectors * dev->logical_block_size;
err = setup_mq_dev(dev);
if (err)
return err;
dev->gd = blk_mq_alloc_disk(&dev->sess->tag_set, dev);
if (IS_ERR(dev->gd))
return PTR_ERR(dev->gd);
dev->queue = dev->gd->queue;
rnbd_init_mq_hw_queues(dev);
setup_request_queue(dev);
dev->gd = alloc_disk_node(1 << RNBD_PART_BITS, NUMA_NO_NODE);
if (!dev->gd) {
blk_cleanup_queue(dev->queue);
return -ENOMEM;
}
rnbd_clt_setup_gen_disk(dev, idx);
return 0;
}
@ -1650,8 +1632,7 @@ put_sess:
static void destroy_gen_disk(struct rnbd_clt_dev *dev)
{
del_gendisk(dev->gd);
blk_cleanup_queue(dev->queue);
put_disk(dev->gd);
blk_cleanup_disk(dev->gd);
}
static void destroy_sysfs(struct rnbd_clt_dev *dev,