diff options
Diffstat (limited to 'drivers/target/target_core_device.c')
| -rw-r--r-- | drivers/target/target_core_device.c | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index d90dbb0..207b340 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -92,6 +92,9 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) se_cmd->pr_res_key = deve->pr_res_key; se_cmd->orig_fe_lun = unpacked_lun; se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; + + percpu_ref_get(&se_lun->lun_ref); + se_cmd->lun_ref_active = true; } spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); @@ -119,24 +122,20 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0; se_cmd->orig_fe_lun = 0; se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; + + percpu_ref_get(&se_lun->lun_ref); + se_cmd->lun_ref_active = true; } /* Directly associate cmd with se_dev */ se_cmd->se_dev = se_lun->lun_se_dev; - /* TODO: get rid of this and use atomics for stats */ dev = se_lun->lun_se_dev; - spin_lock_irqsave(&dev->stats_lock, flags); - dev->num_cmds++; + atomic_long_inc(&dev->num_cmds); if (se_cmd->data_direction == DMA_TO_DEVICE) - dev->write_bytes += se_cmd->data_length; + atomic_long_add(se_cmd->data_length, &dev->write_bytes); else if (se_cmd->data_direction == DMA_FROM_DEVICE) - dev->read_bytes += se_cmd->data_length; - spin_unlock_irqrestore(&dev->stats_lock, flags); - - spin_lock_irqsave(&se_lun->lun_cmd_lock, flags); - list_add_tail(&se_cmd->se_lun_node, &se_lun->lun_cmd_list); - spin_unlock_irqrestore(&se_lun->lun_cmd_lock, flags); + atomic_long_add(se_cmd->data_length, &dev->read_bytes); return 0; } @@ -314,14 +313,14 @@ int core_enable_device_list_for_node( deve = nacl->device_list[mapped_lun]; /* - * Check if the call is handling demo mode -> explict LUN ACL + * Check if the call is handling demo mode -> explicit LUN ACL * transition. This transition must be for the same struct se_lun * + mapped_lun that was setup in demo mode.. */ if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { if (deve->se_lun_acl != NULL) { pr_err("struct se_dev_entry->se_lun_acl" - " already set for demo mode -> explict" + " already set for demo mode -> explicit" " LUN ACL transition\n"); spin_unlock_irq(&nacl->device_list_lock); return -EINVAL; @@ -329,7 +328,7 @@ int core_enable_device_list_for_node( if (deve->se_lun != lun) { pr_err("struct se_dev_entry->se_lun does" " match passed struct se_lun for demo mode" - " -> explict LUN ACL transition\n"); + " -> explicit LUN ACL transition\n"); spin_unlock_irq(&nacl->device_list_lock); return -EINVAL; } @@ -1407,6 +1406,7 @@ static void scsi_dump_inquiry(struct se_device *dev) struct se_device *target_alloc_device(struct se_hba *hba, const char *name) { struct se_device *dev; + struct se_lun *xcopy_lun; dev = hba->transport->alloc_device(hba, name); if (!dev) @@ -1423,7 +1423,6 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name) INIT_LIST_HEAD(&dev->state_list); INIT_LIST_HEAD(&dev->qf_cmd_list); INIT_LIST_HEAD(&dev->g_dev_node); - spin_lock_init(&dev->stats_lock); spin_lock_init(&dev->execute_task_lock); spin_lock_init(&dev->delayed_cmd_lock); spin_lock_init(&dev->dev_reservation_lock); @@ -1469,6 +1468,14 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name) dev->dev_attrib.fabric_max_sectors = DA_FABRIC_MAX_SECTORS; dev->dev_attrib.optimal_sectors = DA_FABRIC_MAX_SECTORS; + xcopy_lun = &dev->xcopy_lun; + xcopy_lun->lun_se_dev = dev; + init_completion(&xcopy_lun->lun_shutdown_comp); + INIT_LIST_HEAD(&xcopy_lun->lun_acl_list); + spin_lock_init(&xcopy_lun->lun_acl_lock); + spin_lock_init(&xcopy_lun->lun_sep_lock); + init_completion(&xcopy_lun->lun_ref_comp); + return dev; } |