Re: [PATCH AUTOSEL 5.8 11/42] nvme: skip noiob for zoned devices

[Keith Busch]

On Mon, Aug 31, 2020 at 11:29:03AM -0400, Sasha Levin wrote:
> From: Keith Busch <kbusch@xxxxxxxxxx>
> 
> [ Upstream commit c41ad98bebb8f4f0335b3c50dbb7583a6149dce4 ]
> 
> Zoned block devices reuse the chunk_sectors queue limit to define zone
> boundaries. If a such a device happens to also report an optimal
> boundary, do not use that to define the chunk_sectors as that may
> intermittently interfere with io splitting and zone size queries.
> 
> Signed-off-by: Keith Busch <kbusch@xxxxxxxxxx>
> Signed-off-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
> Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

You can safely drop this from stable: nvme zoned devices were only introduced
to linux in 5.9.