diff options
| -rw-r--r-- | drivers/nvme/host/core.c | 25 | ||||
| -rw-r--r-- | drivers/nvme/host/nvme.h | 1 | ||||
| -rw-r--r-- | drivers/nvme/host/pci.c | 30 |
3 files changed, 44 insertions, 12 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 2a69d735efbc..609307ca9e4d 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -232,6 +232,15 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl, old_state = ctrl->state; switch (new_state) { + case NVME_CTRL_ADMIN_ONLY: + switch (old_state) { + case NVME_CTRL_RESETTING: + changed = true; + /* FALLTHRU */ + default: + break; + } + break; case NVME_CTRL_LIVE: switch (old_state) { case NVME_CTRL_NEW: @@ -247,6 +256,7 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl, switch (old_state) { case NVME_CTRL_NEW: case NVME_CTRL_LIVE: + case NVME_CTRL_ADMIN_ONLY: changed = true; /* FALLTHRU */ default: @@ -266,6 +276,7 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl, case NVME_CTRL_DELETING: switch (old_state) { case NVME_CTRL_LIVE: + case NVME_CTRL_ADMIN_ONLY: case NVME_CTRL_RESETTING: case NVME_CTRL_RECONNECTING: changed = true; @@ -2336,8 +2347,14 @@ static int nvme_dev_open(struct inode *inode, struct file *file) struct nvme_ctrl *ctrl = container_of(inode->i_cdev, struct nvme_ctrl, cdev); - if (ctrl->state != NVME_CTRL_LIVE) + switch (ctrl->state) { + case NVME_CTRL_LIVE: + case NVME_CTRL_ADMIN_ONLY: + break; + default: return -EWOULDBLOCK; + } + file->private_data = ctrl; return 0; } @@ -2601,6 +2618,7 @@ static ssize_t nvme_sysfs_show_state(struct device *dev, static const char *const state_name[] = { [NVME_CTRL_NEW] = "new", [NVME_CTRL_LIVE] = "live", + [NVME_CTRL_ADMIN_ONLY] = "only-admin", [NVME_CTRL_RESETTING] = "resetting", [NVME_CTRL_RECONNECTING]= "reconnecting", [NVME_CTRL_DELETING] = "deleting", @@ -3073,6 +3091,8 @@ static void nvme_scan_work(struct work_struct *work) if (ctrl->state != NVME_CTRL_LIVE) return; + WARN_ON_ONCE(!ctrl->tagset); + if (nvme_identify_ctrl(ctrl, &id)) return; @@ -3093,8 +3113,7 @@ static void nvme_scan_work(struct work_struct *work) void nvme_queue_scan(struct nvme_ctrl *ctrl) { /* - * Do not queue new scan work when a controller is reset during - * removal. + * Only new queue scan work when admin and IO queues are both alive */ if (ctrl->state == NVME_CTRL_LIVE) queue_work(nvme_wq, &ctrl->scan_work); diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index ea1aa5283e8e..eecf71ce6e75 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -119,6 +119,7 @@ static inline struct nvme_request *nvme_req(struct request *req) enum nvme_ctrl_state { NVME_CTRL_NEW, NVME_CTRL_LIVE, + NVME_CTRL_ADMIN_ONLY, /* Only admin queue live */ NVME_CTRL_RESETTING, NVME_CTRL_RECONNECTING, NVME_CTRL_DELETING, diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index add7b18d825d..62119078c2bf 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -2035,13 +2035,12 @@ static void nvme_disable_io_queues(struct nvme_dev *dev, int queues) } /* - * Return: error value if an error occurred setting up the queues or calling - * Identify Device. 0 if these succeeded, even if adding some of the - * namespaces failed. At the moment, these failures are silent. TBD which - * failures should be reported. + * return error value only when tagset allocation failed */ static int nvme_dev_add(struct nvme_dev *dev) { + int ret; + if (!dev->ctrl.tagset) { dev->tagset.ops = &nvme_mq_ops; dev->tagset.nr_hw_queues = dev->online_queues - 1; @@ -2057,8 +2056,12 @@ static int nvme_dev_add(struct nvme_dev *dev) dev->tagset.flags = BLK_MQ_F_SHOULD_MERGE; dev->tagset.driver_data = dev; - if (blk_mq_alloc_tag_set(&dev->tagset)) - return 0; + ret = blk_mq_alloc_tag_set(&dev->tagset); + if (ret) { + dev_warn(dev->ctrl.device, + "IO queues tagset allocation failed %d\n", ret); + return ret; + } dev->ctrl.tagset = &dev->tagset; nvme_dbbuf_set(dev); @@ -2291,6 +2294,7 @@ static void nvme_reset_work(struct work_struct *work) container_of(work, struct nvme_dev, ctrl.reset_work); bool was_suspend = !!(dev->ctrl.ctrl_config & NVME_CC_SHN_NORMAL); int result = -ENODEV; + enum nvme_ctrl_state new_state = NVME_CTRL_LIVE; if (WARN_ON(dev->ctrl.state != NVME_CTRL_RESETTING)) goto out; @@ -2354,15 +2358,23 @@ static void nvme_reset_work(struct work_struct *work) dev_warn(dev->ctrl.device, "IO queues not created\n"); nvme_kill_queues(&dev->ctrl); nvme_remove_namespaces(&dev->ctrl); + new_state = NVME_CTRL_ADMIN_ONLY; } else { nvme_start_queues(&dev->ctrl); nvme_wait_freeze(&dev->ctrl); - nvme_dev_add(dev); + /* hit this only when allocate tagset fails */ + if (nvme_dev_add(dev)) + new_state = NVME_CTRL_ADMIN_ONLY; nvme_unfreeze(&dev->ctrl); } - if (!nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_LIVE)) { - dev_warn(dev->ctrl.device, "failed to mark controller live\n"); + /* + * If only admin queue live, keep it to do further investigation or + * recovery. + */ + if (!nvme_change_ctrl_state(&dev->ctrl, new_state)) { + dev_warn(dev->ctrl.device, + "failed to mark controller state %d\n", new_state); goto out; } |