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nvme-pci: remove unnecessary nested locking

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The nvme pci driver no longer handles completions under the cq lock,
so the nested locking is not necessary.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Keith Busch 2018-06-06 08:13:04 -06:00 committed by Jens Axboe
parent 9ba2a5cb88
commit 0bc8819203
1 changed files with 1 additions and 7 deletions
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8
drivers/nvme/host/pci.c
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@ -2012,13 +2012,7 @@ static void nvme_del_cq_end(struct request *req, blk_status_t error)
if (!error) {
unsigned long flags;
/*
* We might be called with the AQ cq_lock held
* and the I/O queue cq_lock should always
* nest inside the AQ one.
*/
spin_lock_irqsave_nested(&nvmeq->cq_lock, flags,
SINGLE_DEPTH_NESTING);
spin_lock_irqsave(&nvmeq->cq_lock, flags);
nvme_process_cq(nvmeq, &start, &end, -1);
spin_unlock_irqrestore(&nvmeq->cq_lock, flags);