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由 Kay Sievers 提交于
Replace the linked list, that keeps track of allocated devices, with an idr index to allow a more efficient lookup of devices. Cc: Tejun Heo <tj@kernel.org> Signed-off-by: NKay Sievers <kay.sievers@vrfy.org> Signed-off-by: NJens Axboe <jaxboe@fusionio.com>
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