On Tue, Feb 14, 2012 at 12:34 PM, Jun'ichi Nomura <j-nomura@xxxxxxxxxxxxx> wrote: > While scsi_device is propery refcounted object, > q->queuedata is set to NULL by scsi_remove_device() asynchronously. > So every reader of scsi_device's q->queuedata should always check it. As far as I can see this patch narrows the race window but doesn't fix the race. At least sd_prep_fn() still reads queuedata and if I'm not mistaken that read races with scsi_remove_device(). Has it been considered to modify scsi_remove_device() and scsi_request_fn() such that device removal is communicated from the former to the latter in another way than by clearing queuedata ? Bart. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
