> ata_scsi_pass_thru() is not executed at ioctl submission time (block > queue submission time), but rather immediately before it is issued to > the drive. At that point you know the bus is idle, all other commands > have finished executing, and dev->multi_count is fresh not stale. The > code path goes from ata_scsi_pass_thru() to ata_qc_issue() without > releasing the spinlock, even.
Think up to user space Poorusersapp set multicount to 4 Evilproprietarytuningdaemon set multicount to 8 Poorusersapp issue I/O at which point an error is indeed best. > But the last point is true -- we should error rather than just warn > there, AFAICS. Definitely. We've been asked "please do something stupid" and not even in a case where the requester may know better. Alan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
