Re: [driver-core PATCH v6 9/9] libnvdimm: Schedule device registration on node local to the device

[Dan Williams]

On Tue, Nov 27, 2018 at 1:22 PM Bart Van Assche <bvanassche@xxxxxxx> wrote:
>
> On Tue, 2018-11-27 at 12:50 -0800, Dan Williams wrote:
> > Thanks Bart, so tying this back to Alex's patches, does the ordering
> > problem that Alex's patches solve impact the SCSI case? I'm looking
> > for something like "SCSI depends on asynchronous probing and without
> > 'driver core: Establish clear order of operations for deferred probe
> > and remove' probing is often needlessly serialized". I.e. does it
> > suffer from the same platform problem that libnvdimm ran into where
> > it's local async probing implementation was hindered by the driver
> > core?
>
> (+Martin)
>
> Hi Dan,
>
> Patch 6/9 reduces the time needed to scan SCSI LUNs significantly. The only
> way to realize that speedup is by enabling more concurrency. That's why I
> think that patch 6/9 is a significant driver core improvement.

Perfect, Alex, with that added to the 6/9 changelog and moving to
device_private for the async state tracking you can add my
Reviewed-by.