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| author | Keith Busch <keith.busch@intel.com> | 2019-05-14 14:46:09 -0600 |
|---|---|---|
| committer | Keith Busch <keith.busch@intel.com> | 2019-05-17 11:04:34 -0600 |
| commit | d6135c3a1ec0cddda7b8b8e1b5b4abeeafd98289 (patch) | |
| tree | ae1291f1b36c6bac60a3b241769c68be8859b5e4 /drivers/nvme | |
| parent | 2036f7263d70e67d70a67899a468588cb7356bc9 (diff) | |
| download | linux-d6135c3a1ec0cddda7b8b8e1b5b4abeeafd98289.tar.bz2 | |
nvme-pci: Sync queues on reset
A controller with multiple namespaces may have multiple request_queues with
their own timeout work. If a controller fails with IO outstanding to
diffent namespaces, each request queue may attempt to handle it, so
ensure there is no previously scheduled timeout work executing prior to
starting controller initialization by synchronizing with each queue.
Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Diffstat (limited to 'drivers/nvme')
| -rw-r--r-- | drivers/nvme/host/core.c | 12 | ||||
| -rw-r--r-- | drivers/nvme/host/nvme.h | 1 | ||||
| -rw-r--r-- | drivers/nvme/host/pci.c | 1 |
3 files changed, 14 insertions, 0 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 7da80f375315..f6879e417386 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -3880,6 +3880,18 @@ void nvme_start_queues(struct nvme_ctrl *ctrl) } EXPORT_SYMBOL_GPL(nvme_start_queues); + +void nvme_sync_queues(struct nvme_ctrl *ctrl) +{ + struct nvme_ns *ns; + + down_read(&ctrl->namespaces_rwsem); + list_for_each_entry(ns, &ctrl->namespaces, list) + blk_sync_queue(ns->queue); + up_read(&ctrl->namespaces_rwsem); +} +EXPORT_SYMBOL_GPL(nvme_sync_queues); + /* * Check we didn't inadvertently grow the command structure sizes: */ diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index 5ee75b5ff83f..55553d293a98 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -441,6 +441,7 @@ void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status, void nvme_stop_queues(struct nvme_ctrl *ctrl); void nvme_start_queues(struct nvme_ctrl *ctrl); void nvme_kill_queues(struct nvme_ctrl *ctrl); +void nvme_sync_queues(struct nvme_ctrl *ctrl); void nvme_unfreeze(struct nvme_ctrl *ctrl); void nvme_wait_freeze(struct nvme_ctrl *ctrl); void nvme_wait_freeze_timeout(struct nvme_ctrl *ctrl, long timeout); diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 8df176ffcbc1..599065ed6a32 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -2492,6 +2492,7 @@ static void nvme_reset_work(struct work_struct *work) */ if (dev->ctrl.ctrl_config & NVME_CC_ENABLE) nvme_dev_disable(dev, false); + nvme_sync_queues(&dev->ctrl); mutex_lock(&dev->shutdown_lock); result = nvme_pci_enable(dev); |