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nvme: wait until all completed request's complete fn is called

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When aborting in-flight request for recovering controller, we have
to make sure that queue's complete function is called on completed
request before moving on. Otherwise, for example, the warning of
WARN_ON_ONCE(qp->mrs_used > 0) in ib_destroy_qp_user() may be
triggered on nvme-rdma.

Fix this issue by using blk_mq_tagset_wait_completed_request.

Cc: Max Gurtovoy <maxg@mellanox.com>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ming Lei 2019-07-24 11:48:42 +08:00 committed by Jens Axboe
parent 78ca407247
commit 622b8b6893
5 changed files with 18 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/nvme/host/fc.c
View File

@ -2774,6 +2774,7 @@ nvme_fc_delete_association(struct nvme_fc_ctrl *ctrl)
nvme_stop_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);
}
/*
@ -2796,6 +2797,7 @@ nvme_fc_delete_association(struct nvme_fc_ctrl *ctrl)
blk_mq_quiesce_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);
/* kill the aens as they are a separate path */
nvme_fc_abort_aen_ops(ctrl);

2
drivers/nvme/host/pci.c
View File

@ -2401,6 +2401,8 @@ static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown)
blk_mq_tagset_busy_iter(&dev->tagset, nvme_cancel_request, &dev->ctrl);
blk_mq_tagset_busy_iter(&dev->admin_tagset, nvme_cancel_request, &dev->ctrl);
blk_mq_tagset_wait_completed_request(&dev->tagset);
blk_mq_tagset_wait_completed_request(&dev->admin_tagset);
/*
* The driver will not be starting up queues again if shutting down so

8
drivers/nvme/host/rdma.c
View File

@ -901,9 +901,11 @@ static void nvme_rdma_teardown_admin_queue(struct nvme_rdma_ctrl *ctrl,
{
blk_mq_quiesce_queue(ctrl->ctrl.admin_q);
nvme_rdma_stop_queue(&ctrl->queues[0]);
if (ctrl->ctrl.admin_tagset)
if (ctrl->ctrl.admin_tagset) {
blk_mq_tagset_busy_iter(ctrl->ctrl.admin_tagset,
nvme_cancel_request, &ctrl->ctrl);
blk_mq_tagset_wait_completed_request(ctrl->ctrl.admin_tagset);
}
blk_mq_unquiesce_queue(ctrl->ctrl.admin_q);
nvme_rdma_destroy_admin_queue(ctrl, remove);
}
@ -914,9 +916,11 @@ static void nvme_rdma_teardown_io_queues(struct nvme_rdma_ctrl *ctrl,
if (ctrl->ctrl.queue_count > 1) {
nvme_stop_queues(&ctrl->ctrl);
nvme_rdma_stop_io_queues(ctrl);
if (ctrl->ctrl.tagset)
if (ctrl->ctrl.tagset) {
blk_mq_tagset_busy_iter(ctrl->ctrl.tagset,
nvme_cancel_request, &ctrl->ctrl);
blk_mq_tagset_wait_completed_request(ctrl->ctrl.tagset);
}
if (remove)
nvme_start_queues(&ctrl->ctrl);
nvme_rdma_destroy_io_queues(ctrl, remove);

8
drivers/nvme/host/tcp.c
View File

@ -1748,9 +1748,11 @@ static void nvme_tcp_teardown_admin_queue(struct nvme_ctrl *ctrl,
{
blk_mq_quiesce_queue(ctrl->admin_q);
nvme_tcp_stop_queue(ctrl, 0);
if (ctrl->admin_tagset)
if (ctrl->admin_tagset) {
blk_mq_tagset_busy_iter(ctrl->admin_tagset,
nvme_cancel_request, ctrl);
blk_mq_tagset_wait_completed_request(ctrl->admin_tagset);
}
blk_mq_unquiesce_queue(ctrl->admin_q);
nvme_tcp_destroy_admin_queue(ctrl, remove);
}
@ -1762,9 +1764,11 @@ static void nvme_tcp_teardown_io_queues(struct nvme_ctrl *ctrl,
return;
nvme_stop_queues(ctrl);
nvme_tcp_stop_io_queues(ctrl);
if (ctrl->tagset)
if (ctrl->tagset) {
blk_mq_tagset_busy_iter(ctrl->tagset,
nvme_cancel_request, ctrl);
blk_mq_tagset_wait_completed_request(ctrl->tagset);
}
if (remove)
nvme_start_queues(ctrl);
nvme_tcp_destroy_io_queues(ctrl, remove);

2
drivers/nvme/target/loop.c
View File

@ -407,6 +407,7 @@ static void nvme_loop_shutdown_ctrl(struct nvme_loop_ctrl *ctrl)
nvme_stop_queues(&ctrl->ctrl);
blk_mq_tagset_busy_iter(&ctrl->tag_set,
nvme_cancel_request, &ctrl->ctrl);
blk_mq_tagset_wait_completed_request(&ctrl->tag_set);
nvme_loop_destroy_io_queues(ctrl);
}
@ -416,6 +417,7 @@ static void nvme_loop_shutdown_ctrl(struct nvme_loop_ctrl *ctrl)
blk_mq_quiesce_queue(ctrl->ctrl.admin_q);
blk_mq_tagset_busy_iter(&ctrl->admin_tag_set,
nvme_cancel_request, &ctrl->ctrl);
blk_mq_tagset_wait_completed_request(&ctrl->admin_tag_set);
blk_mq_unquiesce_queue(ctrl->ctrl.admin_q);
nvme_loop_destroy_admin_queue(ctrl);
}