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Thu, 10 Oct 2024 08:40:10 -0400 (EDT) From: =?UTF-8?q?Matias=20Bj=C3=B8rling?= To: kbusch@kernel.org, hch@lst.de, dlemoal@kernel.org, cassel@kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, wangyugui@e16-tech.com, martin.petersen@oracle.com, hare@suse.de Cc: =?UTF-8?q?Matias=20Bj=C3=B8rling?= Subject: [PATCH 2/3 v2] nvme: add rotational support Date: Thu, 10 Oct 2024 14:39:50 +0200 Message-ID: <20241010123951.1226105-3-m@bjorling.me> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20241010123951.1226105-1-m@bjorling.me> References: <20241010123951.1226105-1-m@bjorling.me> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable From: Wang Yugui Rotational devices, such as hard-drives, can be detected using the rotational bit in the namespace independent identify namespace data structure. Make the bit visible to the block layer through the rotational queue setting. Signed-off-by: Wang Yugui Reviewed-by: Matias Bj=C3=B8rling Reviewed-by: Martin K. Petersen Reviewed-by: Keith Busch Reviewed-by: Hannes Reinecke larlar Reviewed-by: Christoph Hellwig --- drivers/nvme/host/core.c | 6 ++++++ drivers/nvme/host/nvme.h | 1 + include/linux/nvme.h | 1 + 3 files changed, 8 insertions(+) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 9cbef6342c39..a83cf54c5861 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -41,6 +41,7 @@ struct nvme_ns_info { bool is_readonly; bool is_ready; bool is_removed; + bool is_rotational; }; =20 unsigned int admin_timeout =3D 60; @@ -1623,6 +1624,7 @@ static int nvme_ns_info_from_id_cs_indep(struct nvme_= ctrl *ctrl, info->is_shared =3D id->nmic & NVME_NS_NMIC_SHARED; info->is_readonly =3D id->nsattr & NVME_NS_ATTR_RO; info->is_ready =3D id->nstat & NVME_NSTAT_NRDY; + info->is_rotational =3D id->nsfeat & NVME_NS_ROTATIONAL; } kfree(id); return ret; @@ -2170,6 +2172,9 @@ static int nvme_update_ns_info_block(struct nvme_ns *= ns, else lim.features &=3D ~(BLK_FEAT_WRITE_CACHE | BLK_FEAT_FUA); =20 + if (info->is_rotational) + lim.features |=3D BLK_FEAT_ROTATIONAL; + /* * Register a metadata profile for PI, or the plain non-integrity NVMe * metadata masquerading as Type 0 if supported, otherwise reject block @@ -3619,6 +3624,7 @@ static struct nvme_ns_head *nvme_alloc_ns_head(struct= nvme_ctrl *ctrl, head->ns_id =3D info->nsid; head->ids =3D info->ids; head->shared =3D info->is_shared; + head->rotational =3D info->is_rotational; ratelimit_state_init(&head->rs_nuse, 5 * HZ, 1); ratelimit_set_flags(&head->rs_nuse, RATELIMIT_MSG_ON_RELEASE); kref_init(&head->ref); diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index da57947130cc..3a36548d5c05 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -469,6 +469,7 @@ struct nvme_ns_head { struct list_head entry; struct kref ref; bool shared; + bool rotational; bool passthru_err_log_enabled; struct nvme_effects_log *effects; u64 nuse; diff --git a/include/linux/nvme.h b/include/linux/nvme.h index 7b2ae2e43544..6d0eebb57544 100644 --- a/include/linux/nvme.h +++ b/include/linux/nvme.h @@ -560,6 +560,7 @@ enum { NVME_NS_FLBAS_LBA_SHIFT =3D 1, NVME_NS_FLBAS_META_EXT =3D 0x10, NVME_NS_NMIC_SHARED =3D 1 << 0, + NVME_NS_ROTATIONAL =3D 1 << 4, NVME_LBAF_RP_BEST =3D 0, NVME_LBAF_RP_BETTER =3D 1, NVME_LBAF_RP_GOOD =3D 2, --=20 2.46.0