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charset="utf-7" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: 10f62837-61e6-4171-9896-08d5f89cc5b7 X-MS-Exchange-CrossTenant-originalarrivaltime: 02 Aug 2018 17:24:15.6648 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR04MB0815 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2018-08-03 at 01:17 +-0800, Ming Lei wrote: +AD4- Not mentioning big CPU utilization is consumed unnecessarily for iter= ating +AD4- over all queues even though there is only one active queue, is this f= air from +AD4- system view? I hope that someone will come up some day with a better solution than the list+AF8-for+AF8-each+AF8-entry+AF8-rcu+AF8-rr() loop. But as long as such = a solution has not yet been found that loop should stay in order to preserve fair handling of larg= e numbers of LUNs. Bart.