From patchwork Wed Oct 19 12:15:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Kuai X-Patchwork-Id: 13011706 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4E7B2C4332F for ; Wed, 19 Oct 2022 12:59:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229535AbiJSM74 (ORCPT ); Wed, 19 Oct 2022 08:59:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37126 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231355AbiJSM60 (ORCPT ); Wed, 19 Oct 2022 08:58:26 -0400 Received: from dggsgout12.his.huawei.com (dggsgout12.his.huawei.com [45.249.212.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3089B1C5A61; Wed, 19 Oct 2022 05:41:46 -0700 (PDT) Received: from mail02.huawei.com (unknown [172.30.67.153]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4Mspw12MRvz6R55S; Wed, 19 Oct 2022 19:50:57 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.127.227]) by APP4 (Coremail) with SMTP id gCh0CgCX0DAq5U9jgItmAA--.58124S9; Wed, 19 Oct 2022 19:53:18 +0800 (CST) From: Yu Kuai To: hch@lst.de, ebiggers@google.com, axboe@kernel.dk Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, yukuai3@huawei.com, yukuai1@huaweicloud.com, yi.zhang@huawei.com Subject: [PATCH v5 5/6] elevator: add new field flags in struct elevator_queue Date: Wed, 19 Oct 2022 20:15:17 +0800 Message-Id: <20221019121518.3865235-6-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20221019121518.3865235-1-yukuai1@huaweicloud.com> References: <20221019121518.3865235-1-yukuai1@huaweicloud.com> MIME-Version: 1.0 X-CM-TRANSID: gCh0CgCX0DAq5U9jgItmAA--.58124S9 X-Coremail-Antispam: 1UD129KBjvJXoW7tr17WF1ruF4fuFW8tr47Arb_yoW8XFWUp3 Z3Gws8K3yqqF4UuF4DJ3W3Wa4ak34v9rnxur4kA34UKr17GrWagF18CFy0qF4Utrs7JFsF vF18tayjvFyUCw7anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUU9C14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7 IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4U M4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwCF04k20xvY0x0EwIxGrw CFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE 14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2 IY67AKxVWUCVW8JwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1lIxAIcVCF04k26cxK x2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI 0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUQSdkUUUUU= X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Yu Kuai There are only one flag to indicate that elevator is registered currently, prepare to add a flag to disable wbt if default elevator is bfq. Signed-off-by: Yu Kuai Reviewed-by: Christoph Hellwig --- block/elevator.c | 6 ++---- block/elevator.h | 4 +++- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/block/elevator.c b/block/elevator.c index 20e70fd3f77f..9e12706e8d8c 100644 --- a/block/elevator.c +++ b/block/elevator.c @@ -512,7 +512,7 @@ int elv_register_queue(struct request_queue *q, bool uevent) if (uevent) kobject_uevent(&e->kobj, KOBJ_ADD); - e->registered = 1; + set_bit(ELEVATOR_FLAG_REGISTERED, &e->flags); } return error; } @@ -523,11 +523,9 @@ void elv_unregister_queue(struct request_queue *q) lockdep_assert_held(&q->sysfs_lock); - if (e && e->registered) { + if (e && test_and_clear_bit(ELEVATOR_FLAG_REGISTERED, &e->flags)) { kobject_uevent(&e->kobj, KOBJ_REMOVE); kobject_del(&e->kobj); - - e->registered = 0; } } diff --git a/block/elevator.h b/block/elevator.h index 3f0593b3bf9d..ed574bf3e629 100644 --- a/block/elevator.h +++ b/block/elevator.h @@ -100,10 +100,12 @@ struct elevator_queue void *elevator_data; struct kobject kobj; struct mutex sysfs_lock; - unsigned int registered:1; + unsigned long flags; DECLARE_HASHTABLE(hash, ELV_HASH_BITS); }; +#define ELEVATOR_FLAG_REGISTERED 0 + /* * block elevator interface */