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| author | James Smart <jsmart2021@gmail.com> | 2021-09-14 11:20:07 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2021-09-21 09:17:12 +0200 |
| commit | e5445dae29d25d7b03e0a10d3d4277a1d0c8119b (patch) | |
| tree | e3b5dc43a131ab9958712c89fb15f3eb0546efed /drivers/nvme/host | |
| parent | nvme-fc: update hardware queues before using them (diff) | |
| download | linux-e5445dae29d25d7b03e0a10d3d4277a1d0c8119b.tar.xz linux-e5445dae29d25d7b03e0a10d3d4277a1d0c8119b.zip | |
nvme-fc: avoid race between time out and tear down
To avoid race between time out and tear down, in tear down process,
first we quiesce the queue, and then delete the timer and cancel
the time out work for the queue.
This patch merges the admin and io sync ops into the queue teardown logic
as shown in the RDMA patch 3017013dcc "nvme-rdma: avoid race between time
out and tear down". There is no teardown_lock in nvme-fc.
Signed-off-by: James Smart <jsmart2021@gmail.com>
Tested-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme/host')
| -rw-r--r-- | drivers/nvme/host/fc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index b5d9a5507de5..6ebe68396712 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -2487,6 +2487,7 @@ __nvme_fc_abort_outstanding_ios(struct nvme_fc_ctrl *ctrl, bool start_queues) */ if (ctrl->ctrl.queue_count > 1) { nvme_stop_queues(&ctrl->ctrl); + nvme_sync_io_queues(&ctrl->ctrl); blk_mq_tagset_busy_iter(&ctrl->tag_set, nvme_fc_terminate_exchange, &ctrl->ctrl); blk_mq_tagset_wait_completed_request(&ctrl->tag_set); @@ -2510,6 +2511,7 @@ __nvme_fc_abort_outstanding_ios(struct nvme_fc_ctrl *ctrl, bool start_queues) * clean up the admin queue. Same thing as above. */ blk_mq_quiesce_queue(ctrl->ctrl.admin_q); + blk_sync_queue(ctrl->ctrl.admin_q); blk_mq_tagset_busy_iter(&ctrl->admin_tag_set, nvme_fc_terminate_exchange, &ctrl->ctrl); blk_mq_tagset_wait_completed_request(&ctrl->admin_tag_set); |