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-rw-r--r--drivers/scsi/scsi_lib.c20
-rw-r--r--drivers/scsi/scsi_scan.c2
-rw-r--r--include/scsi/scsi_device.h1
3 files changed, 19 insertions, 4 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index e9901b8f8443..01e4e51c4b68 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -74,8 +74,6 @@ struct kmem_cache *scsi_sdb_cache;
*/
#define SCSI_QUEUE_DELAY 3
-static void scsi_run_queue(struct request_queue *q);
-
/*
* Function: scsi_unprep_request()
*
@@ -161,7 +159,7 @@ static int __scsi_queue_insert(struct scsi_cmnd *cmd, int reason, int unbusy)
blk_requeue_request(q, cmd->request);
spin_unlock_irqrestore(q->queue_lock, flags);
- scsi_run_queue(q);
+ kblockd_schedule_work(q, &device->requeue_work);
return 0;
}
@@ -433,7 +431,11 @@ static void scsi_run_queue(struct request_queue *q)
continue;
}
- blk_run_queue_async(sdev->request_queue);
+ spin_unlock(shost->host_lock);
+ spin_lock(sdev->request_queue->queue_lock);
+ __blk_run_queue(sdev->request_queue);
+ spin_unlock(sdev->request_queue->queue_lock);
+ spin_lock(shost->host_lock);
}
/* put any unprocessed entries back */
list_splice(&starved_list, &shost->starved_list);
@@ -442,6 +444,16 @@ static void scsi_run_queue(struct request_queue *q)
blk_run_queue(q);
}
+void scsi_requeue_run_queue(struct work_struct *work)
+{
+ struct scsi_device *sdev;
+ struct request_queue *q;
+
+ sdev = container_of(work, struct scsi_device, requeue_work);
+ q = sdev->request_queue;
+ scsi_run_queue(q);
+}
+
/*
* Function: scsi_requeue_command()
*
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 087821fac8fe..58584dc0724a 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -242,6 +242,7 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
int display_failure_msg = 1, ret;
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
extern void scsi_evt_thread(struct work_struct *work);
+ extern void scsi_requeue_run_queue(struct work_struct *work);
sdev = kzalloc(sizeof(*sdev) + shost->transportt->device_size,
GFP_ATOMIC);
@@ -264,6 +265,7 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
INIT_LIST_HEAD(&sdev->event_list);
spin_lock_init(&sdev->list_lock);
INIT_WORK(&sdev->event_work, scsi_evt_thread);
+ INIT_WORK(&sdev->requeue_work, scsi_requeue_run_queue);
sdev->sdev_gendev.parent = get_device(&starget->dev);
sdev->sdev_target = starget;
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 2d3ec5094685..dd82e02ddde3 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -169,6 +169,7 @@ struct scsi_device {
sdev_dev;
struct execute_work ew; /* used to get process context on put */
+ struct work_struct requeue_work;
struct scsi_dh_data *scsi_dh_data;
enum scsi_device_state sdev_state;