From: Christoph Hellwig <hch@lst.de>
To: Caleb Sander Mateos <csander@purestorage.com>
Cc: Keith Busch <kbusch@kernel.org>, Jens Axboe <axboe@kernel.dk>,
Christoph Hellwig <hch@lst.de>, Sagi Grimberg <sagi@grimberg.me>,
Chaitanya Kulkarni <kch@nvidia.com>,
linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/6] nvme: always issue I/O Command Set specific Identify Namespace
Date: Fri, 20 Feb 2026 17:08:30 +0100 [thread overview]
Message-ID: <20260220160830.GD15071@lst.de> (raw)
In-Reply-To: <20260220032809.758089-4-csander@purestorage.com>
On Thu, Feb 19, 2026 at 08:28:06PM -0700, Caleb Sander Mateos wrote:
> Currently, the I/O Command Set specific Identify Namespace structure is
> only fetched for controllers that support extended LBA formats. This is
> because struct nvme_id_ns_nvm is only used by nvme_configure_pi_elbas(),
> which is only called when the ELBAS bit is set in the CTRATT field of
> the Identify Controller structure.
>
> However, the I/O Command Set specific Identify Namespace structure will
> soon be used in nvme_config_discard(), so always try to obtain it in
> nvme_update_ns_info_block() if the controller supports NVMe version 2.0
> or later.
This was done kinda intentionally to avoid extra roundtrips and
tripping over buggy implementations. But I think you have a good
use case to extent this, so:
Reviewed-by: Christoph Hellwig <hch@lst.de>
> goto out;
> }
>
> --
> 2.45.2
---end quoted text---
next prev parent reply other threads:[~2026-02-20 16:08 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-20 3:28 [PATCH 0/6] nvme: improve discard_granularity spec compliance Caleb Sander Mateos
2026-02-20 3:28 ` [PATCH 1/6] nvme: add preferred I/O size fields to struct nvme_id_ns_nvm Caleb Sander Mateos
2026-02-20 16:06 ` Christoph Hellwig
2026-02-21 2:55 ` Caleb Sander Mateos
2026-02-23 13:24 ` Christoph Hellwig
2026-02-20 3:28 ` [PATCH 2/6] nvme: update nvme_id_ns OPTPERF constants Caleb Sander Mateos
2026-02-20 16:07 ` Christoph Hellwig
2026-02-20 16:17 ` Caleb Sander Mateos
2026-02-20 16:20 ` Christoph Hellwig
2026-02-20 3:28 ` [PATCH 3/6] nvme: always issue I/O Command Set specific Identify Namespace Caleb Sander Mateos
2026-02-20 16:08 ` Christoph Hellwig [this message]
2026-02-20 3:28 ` [PATCH 4/6] nvme: set discard_granularity from NPDG/NPDA Caleb Sander Mateos
2026-02-20 16:10 ` Christoph Hellwig
2026-02-20 3:28 ` [PATCH 5/6] nvmet: use NVME_NS_FEAT_OPTPERF_SHIFT Caleb Sander Mateos
2026-02-20 16:10 ` Christoph Hellwig
2026-02-20 3:28 ` [PATCH 6/6] nvmet: report NPDGL and NPDAL Caleb Sander Mateos
2026-02-20 16:11 ` Christoph Hellwig
2026-02-20 16:05 ` [PATCH 0/6] nvme: improve discard_granularity spec compliance Christoph Hellwig
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