Ming Lei 3d2936f457 block: only allocate/free mq_usage_counter in blk-mq ...

The percpu counter is only used for blk-mq, so move
its allocation and free inside blk-mq, and don't
allocate it for legacy queue device.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

2014-05-27 09:37:08 -06:00

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