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nullb: use blk_mq_alloc_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: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Link: https://lore.kernel.org/r/20210602065345.355274-21-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-06-02 09:53:35 +03:00 committed by Jens Axboe
parent 4af5f2e030
commit 6759b1a201
1 changed files with 5 additions and 6 deletions
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11
drivers/block/null_blk/main.c
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@ -1851,13 +1851,12 @@ static int null_add_dev(struct nullb_device *dev)
rv = -ENOMEM;
nullb->tag_set->timeout = 5 * HZ;
nullb->q = blk_mq_init_queue_data(nullb->tag_set, nullb);
if (IS_ERR(nullb->q))
nullb->disk = blk_mq_alloc_disk(nullb->tag_set, nullb);
if (IS_ERR(nullb->disk)) {
rv = PTR_ERR(nullb->disk);
goto out_cleanup_tags;
nullb->disk = alloc_disk_node(1, nullb->dev->home_node);
if (!nullb->disk)
goto out_cleanup_tags;
nullb->disk->queue = nullb->q;
}
nullb->q = nullb->disk->queue;
} else if (dev->queue_mode == NULL_Q_BIO) {
rv = -ENOMEM;
nullb->disk = blk_alloc_disk(nullb->dev->home_node);