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Tue, 24 Feb 2026 09:15:01 -0800 (PST) X-Relaying-Domain: purestorage.com Received: from dev-csander.dev.purestorage.com (dev-csander.dev.purestorage.com [10.112.29.101]) by c7-smtp-2023.dev.purestorage.com (Postfix) with ESMTP id E3805341B66; Tue, 24 Feb 2026 10:15:00 -0700 (MST) Received: by dev-csander.dev.purestorage.com (Postfix, from userid 1557716354) id DEB7CE41254; Tue, 24 Feb 2026 10:15:00 -0700 (MST) From: Caleb Sander Mateos To: Keith Busch , Jens Axboe , Christoph Hellwig , Sagi Grimberg , Chaitanya Kulkarni Cc: linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, Caleb Sander Mateos Subject: [PATCH v3 1/8] nvme: add preferred I/O size fields to struct nvme_id_ns_nvm Date: Tue, 24 Feb 2026 10:14:30 -0700 Message-ID: <20260224171437.3175993-2-csander@purestorage.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20260224171437.3175993-1-csander@purestorage.com> References: <20260224171437.3175993-1-csander@purestorage.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit A subsequent change will use the NPDGL and NPDAL fields of the NVM Command Set Specific Identify Namespace structure, so add them (and the handful of intervening fields) to struct nvme_id_ns_nvm. Add an assertion that the size is still 4 KB. Signed-off-by: Caleb Sander Mateos Reviewed-by: Christoph Hellwig --- include/linux/nvme.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/include/linux/nvme.h b/include/linux/nvme.h index 655d194f8e72..1134e6bf2d5c 100644 --- a/include/linux/nvme.h +++ b/include/linux/nvme.h @@ -511,13 +511,20 @@ struct nvme_id_ctrl_zns { struct nvme_id_ns_nvm { __le64 lbstm; __u8 pic; __u8 rsvd9[3]; __le32 elbaf[64]; - __u8 rsvd268[3828]; + __le32 npdgl; + __le32 nprg; + __le32 npra; + __le32 nors; + __le32 npdal; + __u8 rsvd288[3808]; }; +static_assert(sizeof(struct nvme_id_ns_nvm) == 4096); + enum { NVME_ID_NS_NVM_STS_MASK = 0x7f, NVME_ID_NS_NVM_GUARD_SHIFT = 7, NVME_ID_NS_NVM_GUARD_MASK = 0x3, NVME_ID_NS_NVM_QPIF_SHIFT = 9, -- 2.45.2