On Mon, Nov 7, 2016 at 8:48 PM, John Garry <[email protected]> wrote: > From: Xiang Chen <[email protected]> > > Currently slots are allocated from queues in a round-robin fashion. > This causes a problem for internal commands in device mode. For this > mode, we should ensure that the internal abort command is the last > command seen in the host for that device. We can only ensure this when > we place the internal abort command after the preceding commands for > device that in the same queue, as there is no order in which the host > will select a queue to execute the next command.
Is there performance penalty, since only one queue is supported for a device. > > This queue restriction makes supporting scsi mq more tricky in > the future, but should not be a blocker. > > Note: Even though v1 hw does not support internal abort, the > allocation method is chosen to be the same for consistency. > > Signed-off-by: Xiang Chen <[email protected]> > Signed-off-by: John Garry <[email protected]> Reviewed-by: Zhangfei Gao <[email protected]>
