[PATCH 19/26] nfblock: convert to blk_alloc_disk/blk_cleanup_disk

Christoph Hellwig
2021-05-21T05:52:57Z

Convert the nfblock 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>
---
arch/m68k/emu/nfblock.c | 20 +++++---------------
1 file changed, 5 insertions(+), 15 deletions(-)

diff --git a/arch/m68k/emu/nfblock.c b/arch/m68k/emu/nfblock.c
index ba808543161a..9a8394e96388 100644
--- a/arch/m68k/emu/nfblock.c
+++ b/arch/m68k/emu/nfblock.c
@@ -55,7 +55,6 @@ struct nfhd_device {
int id;
u32 blocks, bsize;
int bshift;
- struct request_queue *queue;
struct gendisk *disk;
};

@@ -119,32 +118,24 @@ static int __init nfhd_init_one(int id, u32 blocks, u32 bsize)
dev->bsize = bsize;
dev->bshift = ffs(bsize) - 10;

- dev->queue = blk_alloc_queue(NUMA_NO_NODE);
- if (dev->queue == NULL)
- goto free_dev;
-
- blk_queue_logical_block_size(dev->queue, bsize);
-
- dev->disk = alloc_disk(16);
+ dev->disk = blk_alloc_disk(NUMA_NO_NODE);
if (!dev->disk)
- goto free_queue;
+ goto free_dev;

dev->disk->major = major_num;
dev->disk->first_minor = dev_id * 16;
+ dev->disk->minors = 16;
dev->disk->fops = &nfhd_ops;
dev->disk->private_data = dev;
sprintf(dev->disk->disk_name, "nfhd%u", dev_id);
set_capacity(dev->disk, (sector_t)blocks * (bsize / 512));
- dev->disk->queue = dev->queue;
-
+ blk_queue_logical_block_size(dev->disk->queue, bsize);
add_disk(dev->disk);

list_add_tail(&dev->list, &nfhd_list);

return 0;

-free_queue:
- blk_cleanup_queue(dev->queue);
free_dev:
kfree(dev);
out:
@@ -186,8 +177,7 @@ static void __exit nfhd_exit(void)
list_for_each_entry_safe(dev, next, &nfhd_list, list) {
list_del(&dev->list);
del_gendisk(dev->disk);
- put_disk(dev->disk);
- blk_cleanup_queue(dev->queue);
+ blk_cleanup_disk(dev->disk);
kfree(dev);
}
unregister_blkdev(major_num, "nfhd");
--
2.30.2