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dm: convert to blk_alloc_disk/blk_cleanup_disk

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Convert the dm driver to use the blk_alloc_disk and blk_cleanup_disk
helpers to simplify gendisk and request_queue allocation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20210521055116.1053587-14-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-05-21 07:51:03 +02:00 committed by Jens Axboe
parent bc70852fd1
commit 74fe6ba923
1 changed files with 7 additions and 9 deletions
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16
drivers/md/dm.c
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@ -1801,13 +1801,13 @@ static void cleanup_mapped_device(struct mapped_device *md)
md->disk->private_data = NULL;
spin_unlock(&_minor_lock);
del_gendisk(md->disk);
put_disk(md->disk);
}
if (md->queue) {
if (md->queue)
dm_queue_destroy_keyslot_manager(md->queue);
blk_cleanup_queue(md->queue);
}
if (md->disk)
blk_cleanup_disk(md->disk);
cleanup_srcu_struct(&md->io_barrier);
@ -1869,13 +1869,10 @@ static struct mapped_device *alloc_dev(int minor)
* established. If request-based table is loaded: blk-mq will
* override accordingly.
*/
md->queue = blk_alloc_queue(numa_node_id);
if (!md->queue)
goto bad;
md->disk = alloc_disk_node(1, md->numa_node_id);
md->disk = blk_alloc_disk(md->numa_node_id);
if (!md->disk)
goto bad;
md->queue = md->disk->queue;
init_waitqueue_head(&md->wait);
INIT_WORK(&md->work, dm_wq_work);
@ -1888,6 +1885,7 @@ static struct mapped_device *alloc_dev(int minor)
md->disk->major = _major;
md->disk->first_minor = minor;
md->disk->minors = 1;
md->disk->fops = &dm_blk_dops;
md->disk->queue = md->queue;
md->disk->private_data = md;