@@ -1203,7 +1203,7 @@ static void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects)
if (effects & NVME_CMD_EFFECTS_LBCC)
nvme_update_formats(ctrl);
if (effects & (NVME_CMD_EFFECTS_LBCC | NVME_CMD_EFFECTS_CSE_MASK))
- nvme_unfreeze(ctrl);
+ nvme_unfreeze(ctrl, true);
if (effects & NVME_CMD_EFFECTS_CCC)
nvme_init_identify(ctrl);
if (effects & (NVME_CMD_EFFECTS_NIC | NVME_CMD_EFFECTS_NCC))
@@ -3602,13 +3602,17 @@ void nvme_kill_queues(struct nvme_ctrl *ctrl)
}
EXPORT_SYMBOL_GPL(nvme_kill_queues);
-void nvme_unfreeze(struct nvme_ctrl *ctrl)
+void nvme_unfreeze(struct nvme_ctrl *ctrl, bool check_io_drained)
{
struct nvme_ns *ns;
down_read(&ctrl->namespaces_rwsem);
- list_for_each_entry(ns, &ctrl->namespaces, list)
- blk_mq_unfreeze_queue(ns->queue);
+ list_for_each_entry(ns, &ctrl->namespaces, list) {
+ if (check_io_drained)
+ blk_mq_unfreeze_queue(ns->queue);
+ else
+ blk_mq_unfreeze_queue_no_drain_io(ns->queue);
+ }
up_read(&ctrl->namespaces_rwsem);
}
EXPORT_SYMBOL_GPL(nvme_unfreeze);
@@ -432,7 +432,7 @@ 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_unfreeze(struct nvme_ctrl *ctrl);
+void nvme_unfreeze(struct nvme_ctrl *ctrl, bool check_io_drained);
void nvme_wait_freeze(struct nvme_ctrl *ctrl);
void nvme_wait_freeze_timeout(struct nvme_ctrl *ctrl, long timeout);
void nvme_start_freeze(struct nvme_ctrl *ctrl);
@@ -2328,11 +2328,10 @@ static void nvme_reset_work(struct work_struct *work)
new_state = NVME_CTRL_ADMIN_ONLY;
} else {
nvme_start_queues(&dev->ctrl);
- nvme_wait_freeze(&dev->ctrl);
/* hit this only when allocate tagset fails */
if (nvme_dev_add(dev))
new_state = NVME_CTRL_ADMIN_ONLY;
- nvme_unfreeze(&dev->ctrl);
+ nvme_unfreeze(&dev->ctrl, false);
}
/*
After the controller is recovered, it isn't necessary to wait for completion of all in-flight IO. More importantly, it is easy to trigger deadlock if there is new IO timeout triggered. Cc: Tejun Heo <tj@kernel.org> Cc: Jianchao Wang <jianchao.w.wang@oracle.com> Cc: Kent Overstreet <kent.overstreet@gmail.com> Cc: linux-block@vger.kernel.org Cc: Christoph Hellwig <hch@lst.de> Cc: linux-nvme@lists.infradead.org Cc: Keith Busch <keith.busch@intel.com> Signed-off-by: Ming Lei <ming.lei@redhat.com> --- drivers/nvme/host/core.c | 12 ++++++++---- drivers/nvme/host/nvme.h | 2 +- drivers/nvme/host/pci.c | 3 +-- 3 files changed, 10 insertions(+), 7 deletions(-)