goto out_free_td;
}
- r = bd_link_disk_holder(bdev, dm_disk(md));
- if (r)
- goto out_blkdev_put;
+ /*
+ * We can be called before the dm disk is added. In that case we can't
+ * register the holder relation here. It will be done once add_disk was
+ * called.
+ */
+ if (md->disk->slave_dir) {
+ r = bd_link_disk_holder(bdev, md->disk);
+ if (r)
+ goto out_blkdev_put;
+ }
td->dm_dev.mode = mode;
td->dm_dev.bdev = bdev;
*/
static void close_table_device(struct table_device *td, struct mapped_device *md)
{
- bd_unlink_disk_holder(td->dm_dev.bdev, dm_disk(md));
+ if (md->disk->slave_dir)
+ bd_unlink_disk_holder(td->dm_dev.bdev, md->disk);
blkdev_put(td->dm_dev.bdev, td->dm_dev.mode | FMODE_EXCL);
put_dax(td->dm_dev.dax_dev);
list_del(&td->list);
md->disk->private_data = NULL;
spin_unlock(&_minor_lock);
if (dm_get_md_type(md) != DM_TYPE_NONE) {
+ struct table_device *td;
+
dm_sysfs_exit(md);
+ list_for_each_entry(td, &md->table_devices, list) {
+ bd_unlink_disk_holder(td->dm_dev.bdev,
+ md->disk);
+ }
/*
* Hold lock to make sure del_gendisk() won't concurrent
{
enum dm_queue_mode type = dm_table_get_type(t);
struct queue_limits limits;
+ struct table_device *td;
int r;
switch (type) {
if (r)
return r;
- r = dm_sysfs_init(md);
- if (r) {
- mutex_lock(&md->table_devices_lock);
- del_gendisk(md->disk);
- mutex_unlock(&md->table_devices_lock);
- return r;
+ /*
+ * Register the holder relationship for devices added before the disk
+ * was live.
+ */
+ list_for_each_entry(td, &md->table_devices, list) {
+ r = bd_link_disk_holder(td->dm_dev.bdev, md->disk);
+ if (r)
+ goto out_undo_holders;
}
+ r = dm_sysfs_init(md);
+ if (r)
+ goto out_undo_holders;
+
md->type = type;
return 0;
+
+out_undo_holders:
+ list_for_each_entry_continue_reverse(td, &md->table_devices, list)
+ bd_unlink_disk_holder(td->dm_dev.bdev, md->disk);
+ mutex_lock(&md->table_devices_lock);
+ del_gendisk(md->disk);
+ mutex_unlock(&md->table_devices_lock);
+ return r;
}
struct mapped_device *dm_get_md(dev_t dev)