Re: [PATCH v2] scsi: virtio_scsi: unplug LUNs when events missed

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On Thu, Sep 05, 2019 at 06:19:28PM +0000, Matt Lupfer wrote:
> The event handler calls scsi_scan_host() when events are missed, which
> will hotplug new LUNs.  However, this function won't remove any
> unplugged LUNs.  The result is that hotunplug doesn't work properly when
> the number of unplugged LUNs exceeds the event queue size (currently 8).
> 
> Scan existing LUNs when events are missed to check if they are still
> present.  If not, remove them.
> 
> Signed-off-by: Matt Lupfer <mlupfer@xxxxxxx>
> ---
>  drivers/scsi/virtio_scsi.c | 33 +++++++++++++++++++++++++++++++++
>  1 file changed, 33 insertions(+)

Please include a changelog in future patch revisions.  For example:

  Signed-off-by: ...
  ---
  v2:
    * Replaced magic constants with sd.h constants [Michael]

Just C and virtio code review, no SCSI specifics:

Reviewed-by: Stefan Hajnoczi <stefanha@xxxxxxxxxx>

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