On Mon, 2015-01-12 at 14:29 +0100, Hannes Reinecke wrote: > On 01/12/2015 02:12 PM, Ewan Milne wrote: > > On Thu, 2015-01-08 at 07:43 +0100, Hannes Reinecke wrote: > >> It is not good practice to display the kernel pointer > >> in any message logs, and it doesn't display any additional > >> information. And as we know have block-layer assigned tags > >> we can use them to differentiate the messages. > >> So remove any pointer references from the displayed messages. > >> > > > > I'd actually be sad to see this go -- I have found it useful > > in the past when debugging crash dumps from customer sites > > to be able to look in the kernel messages and see that a > > particular scsi_cmnd had been aborted just before the crash > > (and then later completed). > > > But that's precisely why we've prefixed the scmd messages with the > tag number; with that you'll be able to extract the same information. > > And now that hch separated out the block layer tagging from SCSI-2 > TCQ we should have the tag number available for any command, not > just those from drivers which use TCQ. > > Let me know if that isn't the case; this patch indeed only makes > sense if the tag number is always available.
Ah, yes, I think you may be right -- I ran into this when debugging some double completion panics, so my concern is whether the tag field remains valid after it completes the first time. I'll check. -Ewan -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
