From nobody Wed Dec 17 14:13:36 2025 Received: from dggsgout11.his.huawei.com (dggsgout11.his.huawei.com [45.249.212.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B6C082C027D; Tue, 30 Sep 2025 07:21:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.51 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759216918; cv=none; b=CvujhoSljMqtXHagwhP3UIsMtS4lpFlTHLcUB330VxwzO/7A25TjA3BLfczvxGkvh8xMJ/fokCujIsG2bGEuNjzUABkE6AenHdPpxpdosyXTJSRs1/MLZB6HOS622j4H+9RTuhvFzMifjBarKPw6z9tpPzM63lsWqDZWEFaC79s= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759216918; c=relaxed/simple; bh=xnPYgdSTZcvH2V/KsDQCUBMVx8+oZQ4daHbrCqvMGgw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Calhrl8edrcR9XGaK0wC3Z9rEX2ZqcBHypZMDwAck5Yb6p6nhIyMASpDud7yndgI/QaMc1PyeSUYA8Gyyi2HCxJknjmqDbdYFR33ymW7mEmE3mu7J4mkFbmbSU+sQBxfbyKlhGGxYKBgpmIoHk3Ejg+N42IrBRWiM+ZX3YjWnXo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.163.216]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTPS id 4cbTy80VWLzYQtnm; Tue, 30 Sep 2025 15:21:36 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id 4E6B81A1B09; Tue, 30 Sep 2025 15:21:53 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP4 (Coremail) with SMTP id gCh0CgDHjGQLhdtoC9s4BQ--.44849S11; Tue, 30 Sep 2025 15:21:53 +0800 (CST) From: Yu Kuai To: axboe@kernel.dk, bvanassche@acm.org, ming.lei@redhat.com, nilay@linux.ibm.com Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, yukuai3@huawei.com, yukuai1@huaweicloud.com, yi.zhang@huawei.com, yangerkun@huawei.com, johnny.chenyi@huawei.com Subject: [PATCH 7/7] blk-mq: add documentation for new queue attribute async_dpeth Date: Tue, 30 Sep 2025 15:11:11 +0800 Message-Id: <20250930071111.1218494-8-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20250930071111.1218494-1-yukuai1@huaweicloud.com> References: <20250930071111.1218494-1-yukuai1@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: gCh0CgDHjGQLhdtoC9s4BQ--.44849S11 X-Coremail-Antispam: 1UD129KBjvdXoW7Jr1UAFykJr15uF13ur4Durg_yoWDuFXEgF WDGF1vg3ykAF15ZFW2yF4kAF12g3y5Kry8G3WkAr15Zry3t3WSka98XrZ8CFZrXF4I9rn3 Zws5XrWUKrnxtjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbvxFF20E14v26rWj6s0DM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI8067AKxVWUAVCq3wA2048vs2 IY020Ec7CjxVAFwI0_Xr0E3s1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2x7M28E F7xvwVC0I7IYx2IY67AKxVWDJVCq3wA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVW8Jr0_Cr 1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s0D M2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjx v20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr1l F7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I0E8cxan2 IY04v7MxkF7I0En4kS14v26r1q6r43MxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY 6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17 CEb7AF67AKxVWUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1I6r4UMIIF 0xvE2Ix0cI8IcVCY1x0267AKxVWxJVW8Jr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMI IF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVF xhVjvjDU0xZFpf9x0JUQFxUUUUUU= X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ Content-Type: text/plain; charset="utf-8" From: Yu Kuai Explain the attribute and the default value in different case. Signed-off-by: Yu Kuai --- Documentation/ABI/stable/sysfs-block | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/ABI/stable/sysfs-block b/Documentation/ABI/stabl= e/sysfs-block index 0ed10aeff86b..09b9b3db9a1f 100644 --- a/Documentation/ABI/stable/sysfs-block +++ b/Documentation/ABI/stable/sysfs-block @@ -609,6 +609,16 @@ Description: enabled, and whether tags are shared. =20 =20 +What: /sys/block//queue/async_depth +Date: August 2025 +Contact: linux-block@vger.kernel.org +Description: + [RW] This controls how many async requests may be allocated in the + block layer. If elevator is none, then this value is nr_requests. + By default, this value is 75% of nr_requests for bfq and kyber, + abd nr_requests for mq-deadline. + + What: /sys/block//queue/nr_zones Date: November 2018 Contact: Damien Le Moal --=20 2.39.2