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block: only allocate/free mq_usage_counter in blk-mq

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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 <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Ming Lei 2014-05-27 23:35:14 +08:00 • committed by Jens Axboe
commit 3d2936f457
3 changed files with 6 additions and 8 deletions
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2
block/blk-sysfs.c
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@ -517,8 +517,6 @@ static void blk_release_queue(struct kobject *kobj)
if (q->queue_tags)
__blk_queue_free_tags(q);
percpu_counter_destroy(&q->mq_usage_counter);
if (q->mq_ops)
blk_mq_free_queue(q);