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

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Message-ID: <20200905120310.GI8670@sasha-vm>
Date:   Sat, 5 Sep 2020 08:03:10 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     Keith Busch <kbusch@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Sagi Grimberg <sagi@...mberg.me>, Jens Axboe <axboe@...nel.dk>,
        linux-nvme@...ts.infradead.org
Subject: Re: [PATCH AUTOSEL 5.8 11/42] nvme: skip noiob for zoned devices

On Mon, Aug 31, 2020 at 09:38:18AM -0600, Keith Busch wrote:
>On Mon, Aug 31, 2020 at 11:29:03AM -0400, Sasha Levin wrote:
>> From: Keith Busch <kbusch@...nel.org>
>>
>> [ 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@...nel.org>
>> Signed-off-by: Sagi Grimberg <sagi@...mberg.me>
>> Signed-off-by: Jens Axboe <axboe@...nel.dk>
>> Signed-off-by: Sasha Levin <sashal@...nel.org>
>
>You can safely drop this from stable: nvme zoned devices were only introduced
>to linux in 5.9.

Dropped, thanks!

-- 
Thanks,
Sasha