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pd: use blk_mq_alloc_disk and blk_cleanup_disk

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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/20210602065345.355274-22-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-06-02 09:53:36 +03:00 committed by Jens Axboe
parent 6759b1a201
commit 262d431f90
1 changed files with 12 additions and 18 deletions
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30
drivers/block/paride/pd.c
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@ -879,18 +879,6 @@ static void pd_probe_drive(struct pd_unit *disk)
{
struct gendisk *p;
p = alloc_disk(1 << PD_BITS);
if (!p)
return;
strcpy(p->disk_name, disk->name);
p->fops = &pd_fops;
p->major = major;
p->first_minor = (disk - pd) << PD_BITS;
p->events = DISK_EVENT_MEDIA_CHANGE;
disk->gd = p;
p->private_data = disk;
memset(&disk->tag_set, 0, sizeof(disk->tag_set));
disk->tag_set.ops = &pd_mq_ops;
disk->tag_set.cmd_size = sizeof(struct pd_req);
@ -903,14 +891,21 @@ static void pd_probe_drive(struct pd_unit *disk)
if (blk_mq_alloc_tag_set(&disk->tag_set))
return;
p->queue = blk_mq_init_queue(&disk->tag_set);
if (IS_ERR(p->queue)) {
p = blk_mq_alloc_disk(&disk->tag_set, disk);
if (!p) {
blk_mq_free_tag_set(&disk->tag_set);
p->queue = NULL;
return;
}
disk->gd = p;
strcpy(p->disk_name, disk->name);
p->fops = &pd_fops;
p->major = major;
p->first_minor = (disk - pd) << PD_BITS;
p->minors = 1 << PD_BITS;
p->events = DISK_EVENT_MEDIA_CHANGE;
p->private_data = disk;
p->queue->queuedata = disk;
blk_queue_max_hw_sectors(p->queue, cluster);
blk_queue_bounce_limit(p->queue, BLK_BOUNCE_HIGH);
@ -1019,9 +1014,8 @@ static void __exit pd_exit(void)
if (p) {
disk->gd = NULL;
del_gendisk(p);
blk_cleanup_queue(p->queue);
blk_mq_free_tag_set(&disk->tag_set);
put_disk(p);
blk_cleanup_disk(p);
pi_release(disk->pi);
}
}