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blk-cgroup: consolidate error handling in blkcg_init_queue

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Use a goto label to merge two identical pieces of error handling code.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2018-11-14 17:02:12 +01:00 committed by Jens Axboe
parent b6676f653f
commit 04be60b5e4
1 changed files with 10 additions and 12 deletions
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22
block/blk-cgroup.c
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@ -1173,21 +1173,19 @@ int blkcg_init_queue(struct request_queue *q)
radix_tree_preload_end();
ret = blk_iolatency_init(q);
if (ret) {
spin_lock_irq(q->queue_lock);
blkg_destroy_all(q);
spin_unlock_irq(q->queue_lock);
return ret;
}
if (ret)
goto err_destroy_all;
ret = blk_throtl_init(q);
if (ret) {
spin_lock_irq(q->queue_lock);
blkg_destroy_all(q);
spin_unlock_irq(q->queue_lock);
}
return ret;
if (ret)
goto err_destroy_all;
return 0;
err_destroy_all:
spin_lock_irq(q->queue_lock);
blkg_destroy_all(q);
spin_unlock_irq(q->queue_lock);
return ret;
err_unlock:
spin_unlock_irq(q->queue_lock);
rcu_read_unlock();