linux-kernel - Re: [PATCH RFC 1/3] nvmet: add command quiesce time

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Message-ID: <a301c37c-fcc1-4c1f-9317-eb70cae59cdc@suse.de>
Date: Tue, 1 Apr 2025 11:33:29 +0200
From: Hannes Reinecke <hare@...e.de>
To: Daniel Wagner <wagi@...nel.org>, Christoph Hellwig <hch@....de>,
 Sagi Grimberg <sagi@...mberg.me>, Keith Busch <kbusch@...nel.org>,
 John Meneghini <jmeneghi@...hat.com>, randyj@...estorage.com,
 Mohamed Khalfella <mkhalfella@...estorage.com>
Cc: linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC 1/3] nvmet: add command quiesce time

On 3/24/25 13:07, Daniel Wagner wrote:
> TP4129 introduces Command Quiesce Time (CQT) for coordinating the
> shutdown sequence when for example KATO expires.
> 
> Add support to nvmet but only report CQT is available but the controller
> doesn't need any additional time when shutting down. In this case the
> spec says nvmet should report a value of 1.
> 
> Signed-off-by: Daniel Wagner <wagi@...nel.org>
> ---
>   drivers/nvme/target/admin-cmd.c | 6 ++++++
>   drivers/nvme/target/nvmet.h     | 1 +
>   include/linux/nvme.h            | 4 +++-
>   3 files changed, 10 insertions(+), 1 deletion(-)
> 
Reviewed-by: Hannes Reinecke <hare@...e.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                  Kernel Storage Architect
hare@...e.de                                +49 911 74053 688
SUSE Software Solutions GmbH, Frankenstr. 146, 90461 Nürnberg
HRB 36809 (AG Nürnberg), GF: I. Totev, A. McDonald, W. Knoblich