From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 C4EDE28EA for ; Mon, 10 Mar 2025 11:16:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741605365; cv=none; b=EitLbNkcCclRQg2kIEMoTbc7WlVcaMxY+l7UbQLa1MknwrThvDymOaBSxFS45E1F9LQhwN9KnyFFACqHfxF0Ad5+mOv1N+jXRPmqU3cG1EI7Z4rh83Llx40s9vxOmELLtzOtPrEL49RK3GjwyvmQeJ0kzFbxp7veF4hEUemOVjA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741605365; c=relaxed/simple; bh=79mkcjY4B0YyCKt/FNwnEIEuznX3ICbMQ2Arl7DS3+c=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=oUAp+4jownnXlPOV98aW/ALX1yFHOXb+M5KhF7VRggxCW0CqHu6UmpgzI+SgxanZCaBQbv3wGfzG5P4awVOSklCaNXJULjp58epge0E7scTznQgkfi57qcjmPMTBmZKDiN2fsL+q8y/xRKT8LJUNPuRNFSVEDJmCeg5XmgdDjw0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=vACbGrjg; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="vACbGrjg" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=ac92hY6FRoS7VKnFS5DkCcDP+ztI8Nn2UzOVEEt7Rl8=; b=vACbGrjgIy4urzv0MpYSfGWmZY 2vlBqtWxN8hjVm+nMZS26XFXyVxdCE+d6w2K8Z6qBFIqM05AF+B/eV2dHT37VgA5p3seUMBD0iK3H GYyWX8V2jOXoU1Gf47v2KRV4UCpk2Ukx7UQ6cwQL1DcqC5GrSZ50QjOTqijF5WmS+JJssfYRMrU/c U2dbhzaKSFVklmc7ISrY4ru/r21C+7htciKDa1aHw7qAtx3ISQxatFG/x3OCadtq1wcwWUaVNySSo Tld42F8lFIaQSWGohnKKNruGiaNP+w3F/JUmnMYFjnP+dSCB+nDHd16SDU9ZgGjkcS/EaDA9bjHWh c3SIW0lQ==; Received: from [80.149.170.9] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.98 #2 (Red Hat Linux)) id 1trb71-00000002Oog-3zRo; Mon, 10 Mar 2025 11:16:02 +0000 Date: Mon, 10 Mar 2025 12:15:44 +0100 From: Christoph Hellwig To: Ming Lei Cc: Jens Axboe , linux-block@vger.kernel.org Subject: Re: [RESEND PATCH 5/5] loop: add module parameter of 'nr_hw_queues' Message-ID: References: <20250308162312.1640828-1-ming.lei@redhat.com> <20250308162312.1640828-6-ming.lei@redhat.com> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250308162312.1640828-6-ming.lei@redhat.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Sun, Mar 09, 2025 at 12:23:09AM +0800, Ming Lei wrote: > Add module parameter of 'nr_hw_queues' so that loop can support MQ, > which may reduce contention in case of too many io jobs. More details, please. Also a module parameter is a really bad interface - this needs to be per-device and have a good default.