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bdi: add error handle for bdi_debug_register
In order to make error handle more cleaner we call bdi_debug_register before set state to WB_registered, that we can avoid call bdi_unregister in release_bdi(). Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: weiping zhang <zhangweiping@didichuxing.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -882,10 +882,13 @@ int bdi_register_va(struct backing_dev_info *bdi, const char *fmt, va_list args)
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if (IS_ERR(dev))
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return PTR_ERR(dev);
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if (bdi_debug_register(bdi, dev_name(dev))) {
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device_destroy(bdi_class, dev->devt);
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return -ENOMEM;
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}
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cgwb_bdi_register(bdi);
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bdi->dev = dev;
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bdi_debug_register(bdi, dev_name(dev));
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set_bit(WB_registered, &bdi->wb.state);
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spin_lock_bh(&bdi_lock);
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