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nvdimm-btt: convert to blk_alloc_disk/blk_cleanup_disk

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Convert the nvdimm-btt 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: Hannes Reinecke <hare@suse.de>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20210521055116.1053587-17-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-05-21 07:51:06 +02:00 committed by Jens Axboe
parent 6c552ceabf
commit d4e4e5835f
2 changed files with 7 additions and 19 deletions
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24
drivers/nvdimm/btt.c
View File

@ -1521,34 +1521,25 @@ static int btt_blk_init(struct btt *btt)
struct nd_btt *nd_btt = btt->nd_btt;
struct nd_namespace_common *ndns = nd_btt->ndns;
/* create a new disk and request queue for btt */
btt->btt_queue = blk_alloc_queue(NUMA_NO_NODE);
if (!btt->btt_queue)
btt->btt_disk = blk_alloc_disk(NUMA_NO_NODE);
if (!btt->btt_disk)
return -ENOMEM;
btt->btt_disk = alloc_disk(0);
if (!btt->btt_disk) {
blk_cleanup_queue(btt->btt_queue);
return -ENOMEM;
}
nvdimm_namespace_disk_name(ndns, btt->btt_disk->disk_name);
btt->btt_disk->first_minor = 0;
btt->btt_disk->fops = &btt_fops;
btt->btt_disk->private_data = btt;
btt->btt_disk->queue = btt->btt_queue;
blk_queue_logical_block_size(btt->btt_queue, btt->sector_size);
blk_queue_max_hw_sectors(btt->btt_queue, UINT_MAX);
blk_queue_flag_set(QUEUE_FLAG_NONROT, btt->btt_queue);
blk_queue_logical_block_size(btt->btt_disk->queue, btt->sector_size);
blk_queue_max_hw_sectors(btt->btt_disk->queue, UINT_MAX);
blk_queue_flag_set(QUEUE_FLAG_NONROT, btt->btt_disk->queue);
if (btt_meta_size(btt)) {
int rc = nd_integrity_init(btt->btt_disk, btt_meta_size(btt));
if (rc) {
del_gendisk(btt->btt_disk);
put_disk(btt->btt_disk);
blk_cleanup_queue(btt->btt_queue);
blk_cleanup_disk(btt->btt_disk);
return rc;
}
}
@ -1563,8 +1554,7 @@ static int btt_blk_init(struct btt *btt)
static void btt_blk_cleanup(struct btt *btt)
{
del_gendisk(btt->btt_disk);
put_disk(btt->btt_disk);
blk_cleanup_queue(btt->btt_queue);
blk_cleanup_disk(btt->btt_disk);
}
/**

2
drivers/nvdimm/btt.h
View File

@ -201,7 +201,6 @@ struct badblocks;
/**
* struct btt - handle for a BTT instance
* @btt_disk: Pointer to the gendisk for BTT device
* @btt_queue: Pointer to the request queue for the BTT device
* @arena_list: Head of the list of arenas
* @debugfs_dir: Debugfs dentry
* @nd_btt: Parent nd_btt struct
@ -219,7 +218,6 @@ struct badblocks;
*/
struct btt {
struct gendisk *btt_disk;
struct request_queue *btt_queue;
struct list_head arena_list;
struct dentry *debugfs_dir;
struct nd_btt *nd_btt;