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Mon, 29 Jun 2020 09:03:58 +0000 From: Niklas Cassel To: Damien Le Moal CC: Matias Bjorling , "axboe@kernel.dk" , "kbusch@kernel.org" , "hch@lst.de" , "sagi@grimberg.me" , "martin.petersen@oracle.com" , Hans Holmberg , "linux-scsi@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-block@vger.kernel.org" , "linux-nvme@lists.infradead.org" Subject: Re: [PATCH 1/2] block: add zone_desc_ext_bytes to sysfs Thread-Topic: [PATCH 1/2] block: add zone_desc_ext_bytes to sysfs Thread-Index: AQHWTaAfatwqFYUzT0SXO2cOAFMc8qjvTS8A Date: Mon, 29 Jun 2020 09:03:58 +0000 Message-ID: <20200629090356.GA521026@localhost.localdomain> References: <20200628230102.26990-1-matias.bjorling@wdc.com> <20200628230102.26990-2-matias.bjorling@wdc.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: wdc.com; dkim=none (message not signed) header.d=none;wdc.com; dmarc=none action=none header.from=wdc.com; x-originating-ip: [85.224.200.150] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 8169bcc9-24b6-45e1-2e48-08d81c0b5c11 x-ms-traffictypediagnostic: BYAPR04MB5783: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: wdcipoutbound: EOP-TRUE x-ms-oob-tlc-oobclassifiers: OLM:6430; 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x-ms-exchange-antispam-messagedata: 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 Content-Type: text/plain; charset="iso-8859-1" Content-ID: <16E428DEE464C14EBD113635E6B45B7C@namprd04.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BYAPR04MB5112.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 8169bcc9-24b6-45e1-2e48-08d81c0b5c11 X-MS-Exchange-CrossTenant-originalarrivaltime: 29 Jun 2020 09:03:58.6103 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: W3OzWRj0BZ2GupmMs1QpEm3RvQQi2ooNGFhVCW2hSZjCQSe8IGR/4UEnJNCFlT5kZEve/UrIoGpIFX7vXSeuoQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR04MB5783 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 29, 2020 at 12:52:46AM +0000, Damien Le Moal wrote: > On 2020/06/29 8:01, Matias Bjorling wrote: > > The NVMe Zoned Namespace Command Set adds support for associating > > data to a zone through the Zone Descriptor Extension feature. > >=20 > > The Zone Descriptor Extension size is fixed to a multiple of 64 > > bytes. A value of zero communicates the feature is not available. > > A value larger than zero communites the feature is available, and > > the specified Zone Descriptor Extension size in bytes. > >=20 > > The Zone Descriptor Extension feature is only available in the > > NVMe Zoned Namespaces Command Set. Devices that supports ZAC/ZBC > > therefore reports this value as zero, where as the NVMe device > > driver reports the Zone Descriptor Extension size from the > > specific device. > >=20 > > Signed-off-by: Matias Bj=F8rling > > --- > > Documentation/block/queue-sysfs.rst | 6 ++++++ > > block/blk-sysfs.c | 15 ++++++++++++++- > > drivers/nvme/host/zns.c | 1 + > > drivers/scsi/sd_zbc.c | 1 + > > include/linux/blkdev.h | 22 ++++++++++++++++++++++ > > 5 files changed, 44 insertions(+), 1 deletion(-) > >=20 > > diff --git a/Documentation/block/queue-sysfs.rst b/Documentation/block/= queue-sysfs.rst > > index f261a5c84170..c4fa195c87b4 100644 (snip) > > static struct queue_sysfs_entry queue_nomerges_entry =3D { > > .attr =3D {.name =3D "nomerges", .mode =3D 0644 }, > > .show =3D queue_nomerges_show, > > @@ -787,6 +798,7 @@ static struct attribute *queue_attrs[] =3D { > > &queue_nr_zones_entry.attr, > > &queue_max_open_zones_entry.attr, > > &queue_max_active_zones_entry.attr, >=20 > Which tree is this patch based on ? Not I have seen any patch introducing= max > active zones. The cover letter forgot to mention this patch series' dependencies. I assume that it is based on the following patch series: https://lore.kernel.org/linux-block/20200622162530.1287650-1-kbusch@kernel.= org/ https://lore.kernel.org/linux-block/20200616102546.491961-1-niklas.cassel@w= dc.com/ Kind regards, Niklas=