-static const struct block_device_operations nvm_fops = {
- .owner = THIS_MODULE,
-};
-
-static int nvm_create_target(struct nvm_dev *dev,
- struct nvm_ioctl_create *create)
-{
- struct nvm_ioctl_create_simple *s = &create->conf.s;
- struct request_queue *tqueue;
- struct gendisk *tdisk;
- struct nvm_tgt_type *tt;
- struct nvm_target *t;
- void *targetdata;
-
- if (!dev->mt) {
- pr_info("nvm: device has no media manager registered.\n");
- return -ENODEV;
- }
-
- down_write(&nvm_lock);
- tt = nvm_find_target_type(create->tgttype);
- if (!tt) {
- pr_err("nvm: target type %s not found\n", create->tgttype);
- up_write(&nvm_lock);
- return -EINVAL;
- }
-
- t = nvm_find_target(create->tgtname);
- if (t) {
- pr_err("nvm: target name already exists.\n");
- up_write(&nvm_lock);
- return -EINVAL;
- }
- up_write(&nvm_lock);
-
- t = kmalloc(sizeof(struct nvm_target), GFP_KERNEL);
- if (!t)
- return -ENOMEM;
-
- tqueue = blk_alloc_queue_node(GFP_KERNEL, dev->q->node);
- if (!tqueue)
- goto err_t;
- blk_queue_make_request(tqueue, tt->make_rq);
-
- tdisk = alloc_disk(0);
- if (!tdisk)
- goto err_queue;
-
- sprintf(tdisk->disk_name, "%s", create->tgtname);
- tdisk->flags = GENHD_FL_EXT_DEVT;
- tdisk->major = 0;
- tdisk->first_minor = 0;
- tdisk->fops = &nvm_fops;
- tdisk->queue = tqueue;
-
- targetdata = tt->init(dev, tdisk, s->lun_begin, s->lun_end);
- if (IS_ERR(targetdata))
- goto err_init;
-
- tdisk->private_data = targetdata;
- tqueue->queuedata = targetdata;
-
- blk_queue_max_hw_sectors(tqueue, 8 * dev->ops->max_phys_sect);
-
- set_capacity(tdisk, tt->capacity(targetdata));
- add_disk(tdisk);
-
- t->type = tt;
- t->disk = tdisk;
- t->dev = dev;
-
- down_write(&nvm_lock);
- list_add_tail(&t->list, &nvm_targets);
- up_write(&nvm_lock);
-
- return 0;
-err_init:
- put_disk(tdisk);
-err_queue:
- blk_cleanup_queue(tqueue);
-err_t:
- kfree(t);
- return -ENOMEM;
-}
-