From: Ming Lei <ming.lei@redhat.com>
Date: Wed, 24 Jul 2019 11:48:42 +0800
Subject: [PATCH] nvme: wait until all completed request's complete fn is
called
References: bsc#1156419,jsc#SLE-8281
Git-commit: 622b8b6893ff3096e130250c1298adf57a0cab03
Patch-mainline: v5.4-rc1
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>
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
drivers/nvme/host/fc.c | 2 ++
drivers/nvme/host/pci.c | 2 ++
drivers/nvme/host/rdma.c | 8 ++++++--
drivers/nvme/host/tcp.c | 8 ++++++--
drivers/nvme/target/loop.c | 2 ++
5 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index 232d8094091b..f39ed8cc23a2 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -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);
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 56b95220e10a..20c6651c3b3e 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2404,6 +2404,8 @@ 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
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 842ef876724f..e96c4b552c7f 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -914,9 +914,11 @@ 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);
}
@@ -927,9 +929,11 @@ 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);
diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c
index bdadb27b28bb..e3036f8b58b2 100644
--- a/drivers/nvme/host/tcp.c
+++ b/drivers/nvme/host/tcp.c
@@ -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);
diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c
index 0940c5024a34..ea7843dafd26 100644
--- a/drivers/nvme/target/loop.c
+++ b/drivers/nvme/target/loop.c
@@ -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);
}
--
2.16.4