diff options
Diffstat (limited to 'drivers/scsi/storvsc_drv.c')
| -rw-r--r-- | drivers/scsi/storvsc_drv.c | 52 |
1 files changed, 32 insertions, 20 deletions
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index 5e7200f05873..1b06cf0375dc 100644 --- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -486,6 +486,9 @@ struct hv_host_device { unsigned int port; unsigned char path; unsigned char target; + struct workqueue_struct *handle_error_wq; + struct work_struct host_scan_work; + struct Scsi_Host *host; }; struct storvsc_scan_work { @@ -514,13 +517,12 @@ done: static void storvsc_host_scan(struct work_struct *work) { - struct storvsc_scan_work *wrk; struct Scsi_Host *host; struct scsi_device *sdev; + struct hv_host_device *host_device = + container_of(work, struct hv_host_device, host_scan_work); - wrk = container_of(work, struct storvsc_scan_work, work); - host = wrk->host; - + host = host_device->host; /* * Before scanning the host, first check to see if any of the * currrently known devices have been hot removed. We issue a @@ -540,8 +542,6 @@ static void storvsc_host_scan(struct work_struct *work) * Now scan the host to discover LUNs that may have been added. */ scsi_scan_host(host); - - kfree(wrk); } static void storvsc_remove_lun(struct work_struct *work) @@ -922,6 +922,7 @@ static void storvsc_handle_error(struct vmscsi_request *vm_srb, { struct storvsc_scan_work *wrk; void (*process_err_fn)(struct work_struct *work); + struct hv_host_device *host_dev = shost_priv(host); bool do_work = false; switch (SRB_STATUS(vm_srb->srb_status)) { @@ -988,7 +989,7 @@ static void storvsc_handle_error(struct vmscsi_request *vm_srb, wrk->lun = vm_srb->lun; wrk->tgt_id = vm_srb->target_id; INIT_WORK(&wrk->work, process_err_fn); - schedule_work(&wrk->work); + queue_work(host_dev->handle_error_wq, &wrk->work); } @@ -1116,8 +1117,7 @@ static void storvsc_on_receive(struct storvsc_device *stor_device, struct vstor_packet *vstor_packet, struct storvsc_cmd_request *request) { - struct storvsc_scan_work *work; - + struct hv_host_device *host_dev; switch (vstor_packet->operation) { case VSTOR_OPERATION_COMPLETE_IO: storvsc_on_io_completion(stor_device, vstor_packet, request); @@ -1125,13 +1125,9 @@ static void storvsc_on_receive(struct storvsc_device *stor_device, case VSTOR_OPERATION_REMOVE_DEVICE: case VSTOR_OPERATION_ENUMERATE_BUS: - work = kmalloc(sizeof(struct storvsc_scan_work), GFP_ATOMIC); - if (!work) - return; - - INIT_WORK(&work->work, storvsc_host_scan); - work->host = stor_device->host; - schedule_work(&work->work); + host_dev = shost_priv(stor_device->host); + queue_work( + host_dev->handle_error_wq, &host_dev->host_scan_work); break; case VSTOR_OPERATION_FCHBA_DATA: @@ -1744,6 +1740,7 @@ static int storvsc_probe(struct hv_device *device, host_dev->port = host->host_no; host_dev->dev = device; + host_dev->host = host; stor_device = kzalloc(sizeof(struct storvsc_device), GFP_KERNEL); @@ -1803,10 +1800,20 @@ static int storvsc_probe(struct hv_device *device, if (stor_device->num_sc != 0) host->nr_hw_queues = stor_device->num_sc + 1; + /* + * Set the error handler work queue. + */ + host_dev->handle_error_wq = + alloc_ordered_workqueue("storvsc_error_wq_%d", + WQ_MEM_RECLAIM, + host->host_no); + if (!host_dev->handle_error_wq) + goto err_out2; + INIT_WORK(&host_dev->host_scan_work, storvsc_host_scan); /* Register the HBA and start the scsi bus scan */ ret = scsi_add_host(host, &device->device); if (ret != 0) - goto err_out2; + goto err_out3; if (!dev_is_ide) { scsi_scan_host(host); @@ -1815,7 +1822,7 @@ static int storvsc_probe(struct hv_device *device, device->dev_instance.b[4]); ret = scsi_add_device(host, 0, target, 0); if (ret) - goto err_out3; + goto err_out4; } #if IS_ENABLED(CONFIG_SCSI_FC_ATTRS) if (host->transportt == fc_transport_template) { @@ -1827,14 +1834,17 @@ static int storvsc_probe(struct hv_device *device, fc_host_port_name(host) = stor_device->port_name; stor_device->rport = fc_remote_port_add(host, 0, &ids); if (!stor_device->rport) - goto err_out3; + goto err_out4; } #endif return 0; -err_out3: +err_out4: scsi_remove_host(host); +err_out3: + destroy_workqueue(host_dev->handle_error_wq); + err_out2: /* * Once we have connected with the host, we would need to @@ -1858,6 +1868,7 @@ static int storvsc_remove(struct hv_device *dev) { struct storvsc_device *stor_device = hv_get_drvdata(dev); struct Scsi_Host *host = stor_device->host; + struct hv_host_device *host_dev = shost_priv(host); #if IS_ENABLED(CONFIG_SCSI_FC_ATTRS) if (host->transportt == fc_transport_template) { @@ -1865,6 +1876,7 @@ static int storvsc_remove(struct hv_device *dev) fc_remove_host(host); } #endif + destroy_workqueue(host_dev->handle_error_wq); scsi_remove_host(host); storvsc_dev_remove(dev); scsi_host_put(host); |