From patchwork Mon Mar 1 16:10:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 390083 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6ED6FC4361B for ; Mon, 1 Mar 2021 17:03:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4564465131 for ; Mon, 1 Mar 2021 17:03:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236955AbhCARDS (ORCPT ); Mon, 1 Mar 2021 12:03:18 -0500 Received: from mail.kernel.org ([198.145.29.99]:59158 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236168AbhCAQ6K (ORCPT ); Mon, 1 Mar 2021 11:58:10 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 56F8064FD7; Mon, 1 Mar 2021 16:36:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614616597; bh=qtdWE0eSQAk6aunNhppWgdFTnIAOv1hk3BbPYWeySrY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EVb5dKb/GZ+RfBsmSndzpc2HR6IYP9fvlaZBLdhmxMLfQrx3NDRuFMn3wm8Co9o2d ZSNrTqds6b6+lVs1shl6ogYaQmuaH7WQJKHcEdWOqjmi1t/epVJ6z1RGoX4PXszoeQ EK82awe9zRor9mXKA1khi40Td0qVK5mTjgveg7pI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Christoph Hellwig , Hannes Reinecke , Mike Snitzer , Bart Van Assche , Ming Lei , Jens Axboe , Jack Wang Subject: [PATCH 4.19 008/247] block: add helper for checking if queue is registered Date: Mon, 1 Mar 2021 17:10:28 +0100 Message-Id: <20210301161032.100161958@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210301161031.684018251@linuxfoundation.org> References: <20210301161031.684018251@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Ming Lei commit 58c898ba370e68d39470cd0d932b524682c1f9be upstream. There are 4 users which check if queue is registered, so add one helper to check it. Cc: Christoph Hellwig Cc: Hannes Reinecke Cc: Greg KH Cc: Mike Snitzer Cc: Bart Van Assche Reviewed-by: Bart Van Assche Signed-off-by: Ming Lei Signed-off-by: Jens Axboe Signed-off-by: Jack Wang Signed-off-by: Greg Kroah-Hartman --- block/blk-sysfs.c | 4 ++-- block/blk-wbt.c | 2 +- block/elevator.c | 2 +- include/linux/blkdev.h | 1 + 4 files changed, 5 insertions(+), 4 deletions(-) --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -896,7 +896,7 @@ int blk_register_queue(struct gendisk *d if (WARN_ON(!q)) return -ENXIO; - WARN_ONCE(test_bit(QUEUE_FLAG_REGISTERED, &q->queue_flags), + WARN_ONCE(blk_queue_registered(q), "%s is registering an already registered queue\n", kobject_name(&dev->kobj)); queue_flag_set_unlocked(QUEUE_FLAG_REGISTERED, q); @@ -973,7 +973,7 @@ void blk_unregister_queue(struct gendisk return; /* Return early if disk->queue was never registered. */ - if (!test_bit(QUEUE_FLAG_REGISTERED, &q->queue_flags)) + if (!blk_queue_registered(q)) return; /* --- a/block/blk-wbt.c +++ b/block/blk-wbt.c @@ -708,7 +708,7 @@ void wbt_enable_default(struct request_q return; /* Queue not registered? Maybe shutting down... */ - if (!test_bit(QUEUE_FLAG_REGISTERED, &q->queue_flags)) + if (!blk_queue_registered(q)) return; if ((q->mq_ops && IS_ENABLED(CONFIG_BLK_WBT_MQ)) || --- a/block/elevator.c +++ b/block/elevator.c @@ -1083,7 +1083,7 @@ static int __elevator_change(struct requ struct elevator_type *e; /* Make sure queue is not in the middle of being removed */ - if (!test_bit(QUEUE_FLAG_REGISTERED, &q->queue_flags)) + if (!blk_queue_registered(q)) return -ENOENT; /* --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -743,6 +743,7 @@ bool blk_queue_flag_test_and_clear(unsig #define blk_queue_quiesced(q) test_bit(QUEUE_FLAG_QUIESCED, &(q)->queue_flags) #define blk_queue_pm_only(q) atomic_read(&(q)->pm_only) #define blk_queue_fua(q) test_bit(QUEUE_FLAG_FUA, &(q)->queue_flags) +#define blk_queue_registered(q) test_bit(QUEUE_FLAG_REGISTERED, &(q)->queue_flags) extern void blk_set_pm_only(struct request_queue *q); extern void blk_clear_pm_only(struct request_queue *q);