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Thu, 22 Apr 2021 09:41:07 +0000 From: Avri Altman To: Avri Altman , Ulf Hansson , "linux-mmc@vger.kernel.org" , Adrian Hunter CC: "linux-kernel@vger.kernel.org" Subject: RE: [PATCH v4 0/2] Do not flush cache when it is disabled Thread-Topic: [PATCH v4 0/2] Do not flush cache when it is disabled Thread-Index: AQHXNeudjX2Qn6LgIUetxlee6skg3KrASyEw Date: Thu, 22 Apr 2021 09:41:07 +0000 Message-ID: References: <20210420134641.57343-1-avri.altman@wdc.com> In-Reply-To: <20210420134641.57343-1-avri.altman@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: [212.25.79.133] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: c128f009-e4dc-40dd-95c4-08d90572c129 x-ms-traffictypediagnostic: DM6PR04MB7004: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: wdcipoutbound: EOP-TRUE x-ms-oob-tlc-oobclassifiers: OLM:6790; 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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: DM6PR04MB6575.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: c128f009-e4dc-40dd-95c4-08d90572c129 X-MS-Exchange-CrossTenant-originalarrivaltime: 22 Apr 2021 09:41:07.4485 (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: PFbxJNuT4AqiWQHT1QWV+bmIgrTanxPzManWMwaPabAW+btXx+5DGA5SN95nlv+JsuUbSG56PiEHiqiL29vZQw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR04MB7004 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Ulf - Would you consider picking this sires up now? I was hoping to close this bug. Thanks, Avri > -----Original Message----- > From: Avri Altman > Sent: Tuesday, 20 April 2021 16:47 > To: Ulf Hansson ; linux-mmc@vger.kernel.org; Adri= an > Hunter > Cc: linux-kernel@vger.kernel.org; Avri Altman > Subject: [PATCH v4 0/2] Do not flush cache when it is disabled >=20 > v3 -> v4 > - Attend Adrian's comments > - Add Acked-by tag >=20 > v2 -> v3: > - rebase onto recent cache changes >=20 > v1 -> v2: > - Attend Adrian's comments >=20 > Cache is a temporary storage space in an eMMC device. Volatile by > nature, the cache should in typical case reduce the access time compared > to an access to the main nonvolatile storage. >=20 > The cache function can be turned ON and OFF. Once OFF, the host is not > expected to issue a flush-cache command to the device. >=20 > Avri Altman (2): > mmc: block: Issue flush only if allowed > mmc: block: Update ext_csd.cache_ctrl if it was written >=20 > drivers/mmc/core/block.c | 21 +++++++++++++++++++++ > drivers/mmc/core/mmc.c | 2 +- > drivers/mmc/core/mmc_ops.h | 5 +++++ > 3 files changed, 27 insertions(+), 1 deletion(-) >=20 > -- > 2.25.1