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nvme: Use blk-mq helper for IO termination 

blk-mq offers a tagset iterator so let's use that
instead of using nvme_clear_queues.

Note, we changed nvme_queue_cancel_ios name to nvme_cancel_io
as there is no concept of a queue now in this function (we
also lost the print).

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Sagi Grimberg 2016-04-12 15:07:15 -06:00 committed by Jens Axboe
parent 21f033f7c7
commit 82b4552b91
1 changed files with 5 additions and 14 deletions
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19
drivers/nvme/host/pci.c
View File

@ -965,16 +965,15 @@ static enum blk_eh_timer_return nvme_timeout(struct request *req, bool reserved)
return BLK_EH_RESET_TIMER;
}
static void nvme_cancel_queue_ios(struct request *req, void *data, bool reserved)
static void nvme_cancel_io(struct request *req, void *data, bool reserved)
{
struct nvme_queue *nvmeq = data;
struct nvme_dev *dev = data;
int status;
if (!blk_mq_request_started(req))
return;
dev_dbg_ratelimited(nvmeq->dev->ctrl.device,
"Cancelling I/O %d QID %d\n", req->tag, nvmeq->qid);
dev_dbg_ratelimited(dev->ctrl.device, "Cancelling I/O %d", req->tag);
status = NVME_SC_ABORT_REQ;
if (blk_queue_dying(req->q))
@ -1031,14 +1030,6 @@ static int nvme_suspend_queue(struct nvme_queue *nvmeq)
return 0;
}
static void nvme_clear_queue(struct nvme_queue *nvmeq)
{
spin_lock_irq(&nvmeq->q_lock);
if (nvmeq->tags && *nvmeq->tags)
blk_mq_all_tag_busy_iter(*nvmeq->tags, nvme_cancel_queue_ios, nvmeq);
spin_unlock_irq(&nvmeq->q_lock);
}
static void nvme_disable_admin_queue(struct nvme_dev *dev, bool shutdown)
{
struct nvme_queue *nvmeq = dev->queues[0];
@ -1765,8 +1756,8 @@ static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown)
}
nvme_pci_disable(dev);
for (i = dev->queue_count - 1; i >= 0; i--)
nvme_clear_queue(dev->queues[i]);
blk_mq_tagset_busy_iter(&dev->tagset, nvme_cancel_io, dev);
blk_mq_tagset_busy_iter(&dev->admin_tagset, nvme_cancel_io, dev);
mutex_unlock(&dev->shutdown_lock);
}