diff options
| -rw-r--r-- | drivers/target/target_core_tmr.c | 19 | ||||
| -rw-r--r-- | drivers/target/target_core_transport.c | 47 | ||||
| -rw-r--r-- | include/target/target_core_transport.h | 1 |
3 files changed, 31 insertions, 36 deletions
diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c index b8a780f..4e963da 100644 --- a/drivers/target/target_core_tmr.c +++ b/drivers/target/target_core_tmr.c @@ -236,7 +236,6 @@ static void core_tmr_drain_task_list( list_del(&task->t_state_list); cmd = task->task_se_cmd; - spin_lock_irqsave(&cmd->t_state_lock, flags); pr_debug("LUN_RESET: %s cmd: %p task: %p" " ITT/CmdSN: 0x%08x/0x%08x, i_state: %d, t_state/" "def_t_state: %d/%d cdb: 0x%02x\n", @@ -256,22 +255,8 @@ static void core_tmr_drain_task_list( atomic_read(&cmd->t_transport_stop), atomic_read(&cmd->t_transport_sent)); - if (task->task_flags & TF_ACTIVE) { - task->task_flags |= TF_REQUEST_STOP; - spin_unlock_irqrestore( - &cmd->t_state_lock, flags); - - pr_debug("LUN_RESET: Waiting for task: %p to shutdown" - " for dev: %p\n", task, dev); - wait_for_completion(&task->task_stop_comp); - pr_debug("LUN_RESET Completed task: %p shutdown for" - " dev: %p\n", task, dev); - - spin_lock_irqsave(&cmd->t_state_lock, flags); - atomic_dec(&cmd->t_task_cdbs_left); - task->task_flags &= ~(TF_ACTIVE | TF_REQUEST_STOP); - } - __transport_stop_task_timer(task, &flags); + spin_lock_irqsave(&cmd->t_state_lock, flags); + target_stop_task(task, &flags); if (!atomic_dec_and_test(&cmd->t_task_cdbs_ex_left)) { spin_unlock_irqrestore(&cmd->t_state_lock, flags); diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 4dc492d..6dab819 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -1762,6 +1762,33 @@ void transport_generic_free_cmd_intr( } EXPORT_SYMBOL(transport_generic_free_cmd_intr); +/* + * If the task is active, request it to be stopped and sleep until it + * has completed. + */ +bool target_stop_task(struct se_task *task, unsigned long *flags) +{ + struct se_cmd *cmd = task->task_se_cmd; + bool was_active = false; + + if (task->task_flags & TF_ACTIVE) { + task->task_flags |= TF_REQUEST_STOP; + spin_unlock_irqrestore(&cmd->t_state_lock, *flags); + + pr_debug("Task %p waiting to complete\n", task); + wait_for_completion(&task->task_stop_comp); + pr_debug("Task %p stopped successfully\n", task); + + spin_lock_irqsave(&cmd->t_state_lock, *flags); + atomic_dec(&cmd->t_task_cdbs_left); + task->task_flags &= ~(TF_ACTIVE | TF_REQUEST_STOP); + was_active = true; + } + + __transport_stop_task_timer(task, flags); + return was_active; +} + static int transport_stop_tasks_for_cmd(struct se_cmd *cmd) { struct se_task *task, *task_tmp; @@ -1793,28 +1820,10 @@ static int transport_stop_tasks_for_cmd(struct se_cmd *cmd) continue; } - /* - * If the struct se_task is active, sleep until it is returned - * from the plugin. - */ - if (task->task_flags & TF_ACTIVE) { - task->task_flags |= TF_REQUEST_STOP; - spin_unlock_irqrestore(&cmd->t_state_lock, - flags); - - pr_debug("Task %p waiting to complete\n", task); - wait_for_completion(&task->task_stop_comp); - pr_debug("Task %p stopped successfully\n", task); - - spin_lock_irqsave(&cmd->t_state_lock, flags); - atomic_dec(&cmd->t_task_cdbs_left); - task->task_flags &= ~(TF_ACTIVE | TF_REQUEST_STOP); - } else { + if (!target_stop_task(task, &flags)) { pr_debug("Task %p - did nothing\n", task); ret++; } - - __transport_stop_task_timer(task, &flags); } spin_unlock_irqrestore(&cmd->t_state_lock, flags); diff --git a/include/target/target_core_transport.h b/include/target/target_core_transport.h index 9c7e328..1ba5835 100644 --- a/include/target/target_core_transport.h +++ b/include/target/target_core_transport.h @@ -171,6 +171,7 @@ extern int transport_generic_handle_data(struct se_cmd *); extern void transport_new_cmd_failure(struct se_cmd *); extern int transport_generic_handle_tmr(struct se_cmd *); extern void transport_generic_free_cmd_intr(struct se_cmd *); +extern bool target_stop_task(struct se_task *task, unsigned long *flags); extern void __transport_stop_task_timer(struct se_task *, unsigned long *); extern int transport_generic_map_mem_to_cmd(struct se_cmd *cmd, struct scatterlist *, u32, struct scatterlist *, u32); |