updates for CFQ oops fix
- add a comment to the device structure that the device_busy field
is now protected by the request_queue->queue_lock
- null out sdev->request_queue after the queue is released to trap
any (and there shouldn't be any) use after the queue is freed.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index f6d0513..fe9571d 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -43,6 +43,7 @@
struct list_head siblings; /* list of all devices on this host */
struct list_head same_target_siblings; /* just the devices sharing same target id */
+ /* this is now protected by the request_queue->queue_lock */
volatile unsigned short device_busy; /* commands actually active on low-level */
spinlock_t list_lock;
struct list_head cmd_list; /* queue of in use SCSI Command structures */