From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from 004.mia.mailroute.net (004.mia.mailroute.net [199.89.3.7]) (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 4CA4F30B508 for ; Tue, 14 Oct 2025 15:55:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=199.89.3.7 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760457324; cv=none; b=qKPXe02oAUlzGEtaHqHe8j8cP3D/uy1+yDJrMX9naIeS/BbFNxsycg92jZOJa540GO5QJrntfPjBTY6xYu6utLsZRSIv6KWWsYA4EAYHaRekO1JPEGRF3QS5Q22NT9+S+yoO9KEZz4O/lLfkiAQvcDMvZxai4xcNhHAtGV+/Kxs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760457324; c=relaxed/simple; bh=17B3RSecJSLiMTAjeSJgkq5MMq3YQC6lvQkpMzKWeS4=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=N57D5RMPRLG+keOoQLCS40dxshD46tiYAPbFlf3c2efWZGvvREyxrcB8h0Xr8nKFj9KqdAYbhbch1g89LU3tY5LHa/yuzVGIdGn+Ahlv/kb/oUgc7LvX8lKicDzPwAwRsRyGoh/YkX4yIDkZgqmN1lYyn6sYIriEtf4DmCqQnVs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=acm.org; spf=pass smtp.mailfrom=acm.org; dkim=pass (2048-bit key) header.d=acm.org header.i=@acm.org header.b=ZD0W8fsl; arc=none smtp.client-ip=199.89.3.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=acm.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=acm.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=acm.org header.i=@acm.org header.b="ZD0W8fsl" Received: from localhost (localhost [127.0.0.1]) by 004.mia.mailroute.net (Postfix) with ESMTP id 4cmJhV204dzm0ySc; Tue, 14 Oct 2025 15:55:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=acm.org; h= content-transfer-encoding:content-type:content-type:in-reply-to :from:from:content-language:references:subject:subject :user-agent:mime-version:date:date:message-id:received:received; s=mr01; t=1760457320; x=1763049321; bh=sAQk7tNP65W/y8HLEa5ajCN1 i4HIMOUYTRKKBZcicDM=; b=ZD0W8fslNTek+Da6dl6kdFe+Um/uwCTTZIkzNyrg jESgWnVulKRJ88uOshvkq7m1VYL/5xfr6FynNXI7+UP58GVTpxzHQdD4wrzWhxp7 yA2JdT4dj06zJA8zGvrD30hKzzgy1bwRwhcJiiJMw9M48JWmvK2EFKg3JvfXuRla t2esF82EnYyAAY44OfH0jK0pfgqoWKkMBWrgYaQYD0iNBCrOnnPRy8W0yOhH2Lf8 mIYkFmdWKiC2fa/BNYyPn4B5E4xnzWfo8okCP5BOR63MojEgDH4hqCBIpkatIKyQ 0RlCiVARsWTlOWF4RaynH9vqGnx3Qc4wjWSnkLjoc0pFzg== X-Virus-Scanned: by MailRoute Received: from 004.mia.mailroute.net ([127.0.0.1]) by localhost (004.mia [127.0.0.1]) (mroute_mailscanner, port 10029) with LMTP id XHJoz3Ao3uY7; Tue, 14 Oct 2025 15:55:20 +0000 (UTC) Received: from [100.119.48.131] (unknown [104.135.180.219]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: bvanassche@acm.org) by 004.mia.mailroute.net (Postfix) with ESMTPSA id 4cmJhM19nqzm0yTq; Tue, 14 Oct 2025 15:55:13 +0000 (UTC) Message-ID: <18b78a23-4f56-4767-a3a4-4356474339ab@acm.org> Date: Tue, 14 Oct 2025 08:55:12 -0700 Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] block/mq-deadline: Switch back to a single dispatch list To: Yu Kuai , Jens Axboe Cc: linux-block@vger.kernel.org, Christoph Hellwig , Damien Le Moal , Yu Kuai , chengkaitao , "yukuai (C)" References: <20251013192803.4168772-1-bvanassche@acm.org> <20251013192803.4168772-3-bvanassche@acm.org> Content-Language: en-US From: Bart Van Assche In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 10/13/25 11:10 PM, Yu Kuai wrote: > Do you still want this request to be accounted into per_prio stat? I > feel we should not, otherwise perhaps can you explain more? This is something I don't have a strong opinion about. I think it is possible to exclude AT HEAD requests from the per_prio statistics but I'm not sure it's worth the additional code complexity. Thanks, Bart.