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NVMe: within nvme_free_queues(), delete RCU sychro/deferred free

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Converting from to blk-queue got rid of the driver's RCU
locking-on-queue, so removing unnecessary RCU locking-on-queue
artefacts.

Reviewed-by: Keith Busch <keith.busch@intel.com>

Signed-off-by: Kelly Nicole Kaoudis <kaoudis@colorado.edu>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
kaoudis 2015-01-14 21:01:58 -07:00 committed by Jens Axboe
parent 227290b469
commit 121c7ad4ef
1 changed files with 1 additions and 8 deletions
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9
drivers/block/nvme-core.c
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@ -1108,22 +1108,15 @@ static void nvme_free_queue(struct nvme_queue *nvmeq)
static void nvme_free_queues(struct nvme_dev *dev, int lowest)
{
LLIST_HEAD(q_list);
struct nvme_queue *nvmeq, *next;
struct llist_node *entry;
int i;
for (i = dev->queue_count - 1; i >= lowest; i--) {
struct nvme_queue *nvmeq = dev->queues[i];
llist_add(&nvmeq->node, &q_list);
dev->queue_count--;
dev->queues[i] = NULL;
}
synchronize_rcu();
entry = llist_del_all(&q_list);
llist_for_each_entry_safe(nvmeq, next, entry, node)
nvme_free_queue(nvmeq);
}
}
/**
* nvme_suspend_queue - put queue into suspended state