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nvme-pci: remove q_dmadev from nvme_queue

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We don't need to save the dma device as it's not used in the hot path
and hasn't in a long time. Shrink the struct nvme_queue removing this
unnecessary member.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Keith Busch 2019-03-08 10:43:11 -07:00 committed by Christoph Hellwig
parent 7c349dde26
commit 88a041f4c1
1 changed files with 3 additions and 5 deletions
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8
drivers/nvme/host/pci.c
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@ -177,7 +177,6 @@ static inline struct nvme_dev *to_nvme_dev(struct nvme_ctrl *ctrl)
* commands and one for I/O commands).
*/
struct nvme_queue {
struct device *q_dmadev;
struct nvme_dev *dev;
spinlock_t sq_lock;
struct nvme_command *sq_cmds;
@ -1369,16 +1368,16 @@ static enum blk_eh_timer_return nvme_timeout(struct request *req, bool reserved)
static void nvme_free_queue(struct nvme_queue *nvmeq)
{
dma_free_coherent(nvmeq->q_dmadev, CQ_SIZE(nvmeq->q_depth),
dma_free_coherent(nvmeq->dev->dev, CQ_SIZE(nvmeq->q_depth),
(void *)nvmeq->cqes, nvmeq->cq_dma_addr);
if (!nvmeq->sq_cmds)
return;
if (test_and_clear_bit(NVMEQ_SQ_CMB, &nvmeq->flags)) {
pci_free_p2pmem(to_pci_dev(nvmeq->q_dmadev),
pci_free_p2pmem(to_pci_dev(nvmeq->dev->dev),
nvmeq->sq_cmds, SQ_SIZE(nvmeq->q_depth));
} else {
dma_free_coherent(nvmeq->q_dmadev, SQ_SIZE(nvmeq->q_depth),
dma_free_coherent(nvmeq->dev->dev, SQ_SIZE(nvmeq->q_depth),
nvmeq->sq_cmds, nvmeq->sq_dma_addr);
}
}
@ -1494,7 +1493,6 @@ static int nvme_alloc_queue(struct nvme_dev *dev, int qid, int depth)
if (nvme_alloc_sq_cmds(dev, nvmeq, qid, depth))
goto free_cqdma;
nvmeq->q_dmadev = dev->dev;
nvmeq->dev = dev;
spin_lock_init(&nvmeq->sq_lock);
spin_lock_init(&nvmeq->cq_poll_lock);