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pd: use blk_mq_alloc_disk and blk_cleanup_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/20210602065345.355274-22-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -879,18 +879,6 @@ static void pd_probe_drive(struct pd_unit *disk)
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{
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struct gendisk *p;
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p = alloc_disk(1 << PD_BITS);
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if (!p)
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return;
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strcpy(p->disk_name, disk->name);
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p->fops = &pd_fops;
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p->major = major;
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p->first_minor = (disk - pd) << PD_BITS;
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p->events = DISK_EVENT_MEDIA_CHANGE;
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disk->gd = p;
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p->private_data = disk;
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memset(&disk->tag_set, 0, sizeof(disk->tag_set));
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disk->tag_set.ops = &pd_mq_ops;
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disk->tag_set.cmd_size = sizeof(struct pd_req);
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@ -903,14 +891,21 @@ static void pd_probe_drive(struct pd_unit *disk)
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if (blk_mq_alloc_tag_set(&disk->tag_set))
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return;
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p->queue = blk_mq_init_queue(&disk->tag_set);
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if (IS_ERR(p->queue)) {
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p = blk_mq_alloc_disk(&disk->tag_set, disk);
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if (!p) {
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blk_mq_free_tag_set(&disk->tag_set);
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p->queue = NULL;
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return;
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}
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disk->gd = p;
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strcpy(p->disk_name, disk->name);
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p->fops = &pd_fops;
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p->major = major;
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p->first_minor = (disk - pd) << PD_BITS;
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p->minors = 1 << PD_BITS;
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p->events = DISK_EVENT_MEDIA_CHANGE;
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p->private_data = disk;
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p->queue->queuedata = disk;
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blk_queue_max_hw_sectors(p->queue, cluster);
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blk_queue_bounce_limit(p->queue, BLK_BOUNCE_HIGH);
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@ -1019,9 +1014,8 @@ static void __exit pd_exit(void)
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if (p) {
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disk->gd = NULL;
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del_gendisk(p);
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blk_cleanup_queue(p->queue);
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blk_mq_free_tag_set(&disk->tag_set);
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put_disk(p);
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blk_cleanup_disk(p);
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pi_release(disk->pi);
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}
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}
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