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由 Yu Kuai 提交于
If 'part_shift' is not zero, then 'index << part_shift' might overflow to a value that is not greater than '0xfffff', then sysfs might complains about duplicate creation. Fixes: b0d9111a ("nbd: use an idr to keep track of nbd devices") Signed-off-by: NYu Kuai <yukuai3@huawei.com> Reviewed-by: NJosef Bacik <josef@toxicpanda.com> Link: https://lore.kernel.org/r/20211102015237.2309763-3-yebin10@huawei.comSigned-off-by: NJens Axboe <axboe@kernel.dk>
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