On Wed, Jul 09, 2014 at 01:19:41PM +0200, Hannes Reinecke wrote: >> host_not_ready: >> - atomic_dec(&scsi_target(sdev)->target_busy); >> + if (scsi_target(sdev)->can_queue > 0) >> + atomic_dec(&scsi_target(sdev)->target_busy); >> not_ready: >> /* >> * lock q, handle tag, requeue req, and decrement device_busy. We >> > Hmm. 'can_queue' can be changed by the LLDD. Don't we need some sort of > synchronization here?
While a few drivers change the host can_queue value at runtime none do for the target. While I don't think driver should even change the host one even modification to the target one is perfectly fine as long as no driver drops it to zero. -- 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
