3 files changed, 37 insertions, 14 deletions

diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 879dbbe69799..efc6e72f09f3 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -51,14 +51,14 @@ static void smp_task_timedout(unsigned long _task)
 		task->task_state_flags |= SAS_TASK_STATE_ABORTED;
 	spin_unlock_irqrestore(&task->task_state_lock, flags);
 
-	complete(&task->completion);
+	complete(&task->slow_task->completion);
 }
 
 static void smp_task_done(struct sas_task *task)
 {
-	if (!del_timer(&task->timer))
+	if (!del_timer(&task->slow_task->timer))
 		return;
-	complete(&task->completion);
+	complete(&task->slow_task->completion);
 }
 
 /* Give it some long enough timeout. In seconds. */
@@ -79,7 +79,7 @@ static int smp_execute_task(struct domain_device *dev, void *req, int req_size,
 			break;
 		}
 
-		task = sas_alloc_task(GFP_KERNEL);
+		task = sas_alloc_slow_task(GFP_KERNEL);
 		if (!task) {
 			res = -ENOMEM;
 			break;
@@ -91,20 +91,20 @@ static int smp_execute_task(struct domain_device *dev, void *req, int req_size,
 
 		task->task_done = smp_task_done;
 
-		task->timer.data = (unsigned long) task;
-		task->timer.function = smp_task_timedout;
-		task->timer.expires = jiffies + SMP_TIMEOUT*HZ;
-		add_timer(&task->timer);
+		task->slow_task->timer.data = (unsigned long) task;
+		task->slow_task->timer.function = smp_task_timedout;
+		task->slow_task->timer.expires = jiffies + SMP_TIMEOUT*HZ;
+		add_timer(&task->slow_task->timer);
 
 		res = i->dft->lldd_execute_task(task, 1, GFP_KERNEL);
 
 		if (res) {
-			del_timer(&task->timer);
+			del_timer(&task->slow_task->timer);
 			SAS_DPRINTK("executing SMP task failed:%d\n", res);
 			break;
 		}
 
-		wait_for_completion(&task->completion);
+		wait_for_completion(&task->slow_task->completion);
 		res = -ECOMM;
 		if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
 			SAS_DPRINTK("smp task timed out or aborted\n");
diff --git a/drivers/scsi/libsas/sas_init.c b/drivers/scsi/libsas/sas_init.c
index 1bbab3d94a20..014297c05880 100644
--- a/drivers/scsi/libsas/sas_init.c
+++ b/drivers/scsi/libsas/sas_init.c
@@ -48,18 +48,37 @@ struct sas_task *sas_alloc_task(gfp_t flags)
 		INIT_LIST_HEAD(&task->list);
 		spin_lock_init(&task->task_state_lock);
 		task->task_state_flags = SAS_TASK_STATE_PENDING;
-		init_timer(&task->timer);
-		init_completion(&task->completion);
 	}
 
 	return task;
 }
 EXPORT_SYMBOL_GPL(sas_alloc_task);
 
+struct sas_task *sas_alloc_slow_task(gfp_t flags)
+{
+	struct sas_task *task = sas_alloc_task(flags);
+	struct sas_task_slow *slow = kmalloc(sizeof(*slow), flags);
+
+	if (!task || !slow) {
+		if (task)
+			kmem_cache_free(sas_task_cache, task);
+		kfree(slow);
+		return NULL;
+	}
+
+	task->slow_task = slow;
+	init_timer(&slow->timer);
+	init_completion(&slow->completion);
+
+	return task;
+}
+EXPORT_SYMBOL_GPL(sas_alloc_slow_task);
+
 void sas_free_task(struct sas_task *task)
 {
 	if (task) {
 		BUG_ON(!list_empty(&task->list));
+		kfree(task->slow_task);
 		kmem_cache_free(sas_task_cache, task);
 	}
 }
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index 676414859872..6e795a174a12 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -1134,9 +1134,13 @@ void sas_task_abort(struct sas_task *task)
 
 	/* Escape for libsas internal commands */
 	if (!sc) {
-		if (!del_timer(&task->timer))
+		struct sas_task_slow *slow = task->slow_task;
+
+		if (!slow)
+			return;
+		if (!del_timer(&slow->timer))
 			return;
-		task->timer.function(task->timer.data);
+		slow->timer.function(slow->timer.data);
 		return;
 	}