On Thu, 2014-08-28 at 14:04 +0200, Hannes Reinecke wrote: > On 08/25/2014 01:15 PM, Paolo Bonzini wrote: > > - abort the command, and then the driver should never call the > > ->scsi_done callback for the Scsi_Cmnd*. > > > In practice we rely on the latter behaviour; when ->scsi_done is > called while the command is under eh_abort _really bad things_ > will happen. > As soon as eh_abort is called control is transferred back to the > SCSI midlayer, so any LLDD should never send completions for these > commands back to the midlayer. Mmh, then there is a small race window starting at the point in time when the abort function of an LLDD is called up to the point in time when that abort function has taken the necessary measures to make sure that scsi_done won't be called for a racing command completion , isn't it? Cheers Martin -- Linux on System z Development IBM Deutschland Research & Development GmbH Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen Registergericht: Amtsgericht Stuttgart, HRB 243294 -- 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
