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drbd: remove dead code in device_to_statistics
Ever since the switch to blk-mq, a lower device not used for VM writeback will not be marked congested, so the check will never trigger. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -3370,7 +3370,6 @@ static void device_to_statistics(struct device_statistics *s,
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if (get_ldev(device)) {
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struct drbd_md *md = &device->ldev->md;
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u64 *history_uuids = (u64 *)s->history_uuids;
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struct request_queue *q;
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int n;
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spin_lock_irq(&md->uuid_lock);
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@ -3384,11 +3383,6 @@ static void device_to_statistics(struct device_statistics *s,
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spin_unlock_irq(&md->uuid_lock);
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s->dev_disk_flags = md->flags;
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q = bdev_get_queue(device->ldev->backing_bdev);
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s->dev_lower_blocked =
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bdi_congested(q->backing_dev_info,
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(1 << WB_async_congested) |
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(1 << WB_sync_congested));
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put_ldev(device);
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}
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s->dev_size = drbd_get_capacity(device->this_bdev);
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