On Thu, 2010-09-23 at 19:41 -0400, Mark Lord wrote: > What's the purpose of this stack dump, > and how can it be prevented in this NORMAL situation?? > > The command was "hdparm --security-erase NULL /dev/sdb", > which takes about 66 minutes to complete on this particular drive. > > I don't see any obvious way for the task to mark itself > as needing longer than 120 secs to complete the operation. There is other valid user case. If application calls sys_sync and at same time the filesystem is written by an other application, the sync can easily take more that 2 minutes. Or if block device is slow (as it was with some flash cards). Indeed it would be good to have a kind of touch_softlockup_watchdog(). Best regards, Maxim Levitsky -- 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
