From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from 008.lax.mailroute.net (008.lax.mailroute.net [199.89.1.11]) (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 6D1B91DFCE; Thu, 4 Apr 2024 17:01:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=199.89.1.11 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712250105; cv=none; b=Kq9wQq9LOeDNyFGkFUNAP1BjWjprLFM9dCYRHYjkfAItp1omPAL8OZ07wcrR3w1ecTlkJP2xPv2MQEOS3DJWNfRn3VAZf7/oQI+3zJmZZozpBArp1UL2ux4XMRwrntVcTL+j4BTXUBKYLEL5YtUw4NPkKmYVUmSQvt76Uulqyrk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712250105; c=relaxed/simple; bh=rM2x4dbk7VFiFJBM6YIHHHoXd3itH3P+2rKFSf/ufIw=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=AC1VdImq+p7v+7UmJ2mPxmekDwDIiUqFErdnEUoflDvos52fX+Wu767Q0H9iWF8rd213gJPze79xb213M2/LiKfyGeiuBE0VxGqiyb1mC5YIK0jpTJCM3HR3FyTP1UkSLQq8oTWULN07YhPBFYOJX1wlnsVf0lw8vl4ieoqLvEw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none 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=NQdmCDcT; arc=none smtp.client-ip=199.89.1.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none 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="NQdmCDcT" Received: from localhost (localhost [127.0.0.1]) by 008.lax.mailroute.net (Postfix) with ESMTP id 4V9SZb1m8Bz6Cnk95; Thu, 4 Apr 2024 17:01:43 +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:references:content-language:subject:subject :user-agent:mime-version:date:date:message-id:received:received; s=mr01; t=1712250090; x=1714842091; bh=9FhLzx5SUnsB5zVFL6LJMpKU q4Gcl0se1KNI1H2pwS0=; b=NQdmCDcTkzOqjzDt1m/dkUNU0djeyTx5YYAFsTZT sTd9bEvEJFLf62Hod9cGJ0a7UZHF0FiXQUIiCT83TsCt+CsGdpAI2n6AzdmjQ0Eg iwJ+i+QHyLfSl4g77YaAsoYVmVceau90vtllLDe7eLqkTrUW95Ms007EujEUMnXc ZIO1JDBgnDJJyDAdqQ92/4W2MPz2lRv9pve7JElVJdrbFCi4vOhk7pErOeuDV9Y4 PmnI+hEeDCofmldFX4WBV040SLiwqnRVMcjv4XTFPsbD/zc1Our5/Yzl0cb1fylp APOuTypz6L1+vw8t8z1LAR+ccG3KdbHmtb/3F5tkw3/RGw== X-Virus-Scanned: by MailRoute Received: from 008.lax.mailroute.net ([127.0.0.1]) by localhost (008.lax [127.0.0.1]) (mroute_mailscanner, port 10029) with LMTP id Z4ctKmu4FCRh; Thu, 4 Apr 2024 17:01:30 +0000 (UTC) Received: from [100.96.154.173] (unknown [104.132.1.77]) (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 008.lax.mailroute.net (Postfix) with ESMTPSA id 4V9SZG6Mp6z6Cnk94; Thu, 4 Apr 2024 17:01:26 +0000 (UTC) Message-ID: <214d5b97-76ed-4c05-9696-91d91e8165dd@acm.org> Date: Thu, 4 Apr 2024 10:01:25 -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 06/23] scsi: add a no_highmem flag to struct Scsi_Host Content-Language: en-US To: Christoph Hellwig , Jens Axboe , "Martin K. Petersen" Cc: Damien Le Moal , Niklas Cassel , Takashi Sakamoto , Sathya Prakash , Sreekanth Reddy , Suganath Prabu Subramani , "Juergen E. Fischer" , Xiang Chen , HighPoint Linux Team , Tyrel Datwyler , Brian King , Lee Duncan , Chris Leech , Mike Christie , John Garry , Jason Yan , Kashyap Desai , Sumit Saxena , Shivasharan S , Chandrakanth patil , Jack Wang , Nilesh Javali , GR-QLogic-Storage-Upstream@marvell.com, Greg Kroah-Hartman , Alim Akhtar , Avri Altman , Krzysztof Kozlowski , Alan Stern , linux-block@vger.kernel.org, linux-ide@vger.kernel.org, linux1394-devel@lists.sourceforge.net, MPT-FusionLinux.pdl@broadcom.com, linux-scsi@vger.kernel.org, megaraidlinux.pdl@broadcom.com, mpi3mr-linuxdrv.pdl@broadcom.com, linux-samsung-soc@vger.kernel.org, linux-usb@vger.kernel.org, usb-storage@lists.one-eyed-alien.net References: <20240402130645.653507-1-hch@lst.de> <20240402130645.653507-7-hch@lst.de> From: Bart Van Assche In-Reply-To: <20240402130645.653507-7-hch@lst.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 4/2/24 06:06, Christoph Hellwig wrote: > While we really should be killing the block layer bounce buffering ASAP, > I even more urgently need to stop the drivers to fiddle with the limits > from ->slave_configure. Add a no_highmem flag to the Scsi_Host to > centralize this setting and switch the remaining four drivers that use > block layer bounce buffering to it. Reviewed-by: Bart Van Assche