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Fri, 21 May 2021 09:52:31 +0000 From: Johannes Thumshirn To: Damien Le Moal , David Sterba CC: "linux-btrfs@vger.kernel.org" , Naohiro Aota Subject: Re: [PATCH] btrfs: zoned: limit ordered extent to zoned append size Thread-Topic: [PATCH] btrfs: zoned: limit ordered extent to zoned append size Thread-Index: AQHXTiFEXNaFexnNjU2Pxag8tm94KA== Date: Fri, 21 May 2021 09:52:31 +0000 Message-ID: References: <65f1b716324a06c5cad99f2737a8669899d4569f.1621588229.git.johannes.thumshirn@wdc.com> 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: [2001:a62:152f:cc01:f8bd:921e:9aa5:6d21] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: ee56168b-4f17-4a9f-1c95-08d91c3e2703 x-ms-traffictypediagnostic: PH0PR04MB7509: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: wdcipoutbound: EOP-TRUE x-ms-oob-tlc-oobclassifiers: OLM:8882; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: PH0PR04MB7416.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: ee56168b-4f17-4a9f-1c95-08d91c3e2703 X-MS-Exchange-CrossTenant-originalarrivaltime: 21 May 2021 09:52:31.5202 (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: Welpqe2UNyrpS2VPwEfEUUTLA3zEgQk0np19w2I8s1IRSHbQMcmwU5suKBlU8ZuE85O5UD221BmifpPC+ByTzqE3bzOI4eazJgxW4Rr+D4k= X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR04MB7509 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 21/05/2021 11:46, Damien Le Moal wrote:=0A= >> Note: This patch breaks fstests btrfs/079, as it increases the number of= =0A= >> on-disk extents from 80 to 83 per 10M write.=0A= > Can this test case be fixed by calculating the number of extents that wil= l be=0A= > written using sysfs zone_append_max_bytes ? That would avoid hard-coding = a value=0A= > for the zoned case... =0A= =0A= Probably yes, but I'd like to hear from others how important they see the h= ard coded=0A= value.=0A=