From patchwork Fri Jul 3 06:13:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yufen Yu X-Patchwork-Id: 11640907 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4043A913 for ; Fri, 3 Jul 2020 06:12:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 203AE20675 for ; Fri, 3 Jul 2020 06:12:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725891AbgGCGMJ (ORCPT ); Fri, 3 Jul 2020 02:12:09 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:43748 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725648AbgGCGMJ (ORCPT ); Fri, 3 Jul 2020 02:12:09 -0400 Received: from DGGEMS403-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id A7AC411ADA15C54CD646; Fri, 3 Jul 2020 14:12:05 +0800 (CST) Received: from huawei.com (10.175.101.6) by DGGEMS403-HUB.china.huawei.com (10.3.19.203) with Microsoft SMTP Server id 14.3.487.0; Fri, 3 Jul 2020 14:12:04 +0800 From: Yufen Yu To: , , , Subject: [PATCH] docs: block: update and fix tiny error for bfq Date: Fri, 3 Jul 2020 02:13:23 -0400 Message-ID: <20200703061323.959519-1-yuyufen@huawei.com> X-Mailer: git-send-email 2.25.4 MIME-Version: 1.0 X-Originating-IP: [10.175.101.6] X-CFilter-Loop: Reflected Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org The max value of blkio.bfq.weight is 1000, rather than 10000. And 'weights' have been remove from /sys/block/XXX/queue/iosched. Signed-off-by: Yufen Yu Acked-by: Paolo Valente --- Documentation/block/bfq-iosched.rst | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/Documentation/block/bfq-iosched.rst b/Documentation/block/bfq-iosched.rst index 0d237d402860..19d4d1570cee 100644 --- a/Documentation/block/bfq-iosched.rst +++ b/Documentation/block/bfq-iosched.rst @@ -492,13 +492,6 @@ set max_budget to higher values than those to which BFQ would have set it with auto-tuning. An alternative way to achieve this goal is to just increase the value of timeout_sync, leaving max_budget equal to 0. -weights -------- - -Read-only parameter, used to show the weights of the currently active -BFQ queues. - - 4. Group scheduling with BFQ ============================ @@ -566,7 +559,7 @@ Parameters to set For each group, there is only the following parameter to set. weight (namely blkio.bfq.weight or io.bfq-weight): the weight of the -group inside its parent. Available values: 1..10000 (default 100). The +group inside its parent. Available values: 1..1000 (default 100). The linear mapping between ioprio and weights, described at the beginning of the tunable section, is still valid, but all weights higher than IOPRIO_BE_NR*10 are mapped to ioprio 0.