From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) (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 C5E2A43AC2; Tue, 26 Mar 2024 06:09:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.95.11.211 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711433366; cv=none; b=hGdJzzF0TMbVWA62vWsBkSm+b2kpuBnsxHWIDDSMjBEWsFE5kLRDX1LeL10SswQFdq/1dSuI3IzdWYi1VNiegOB5M/VkbL3z9ibzqfcuSJ7vcM4Ak53clnEhmffSIwHZipQ9ANSZIk+8sv4z0wqZXDSiSTtqsOqXJilX8dLT9y4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711433366; c=relaxed/simple; bh=PAyVBORsJOf54MDJupr82WTTfEjRiH2MrJbR32SeU3s=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=CwGbmbCHfo8GC1sIlBm330eYpCo0guCAkh2R63y7Yu91C74Eb9aG8qMmiirCdCLuy3LhhmAEG8tJWzTc5DNxVc1qYobNHrDTppKMTGEWF4aYPKmLxMGIQT59IMt9M8Qtayzqq1erqmX85USUANu2OOLLh+YozBR0cV0vx6Y4C4s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de; spf=pass smtp.mailfrom=lst.de; arc=none smtp.client-ip=213.95.11.211 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lst.de Received: by verein.lst.de (Postfix, from userid 2407) id A28C568D42; Tue, 26 Mar 2024 07:09:17 +0100 (CET) Date: Tue, 26 Mar 2024 07:09:17 +0100 From: Christoph Hellwig To: Damien Le Moal Cc: Christoph Hellwig , Jens Axboe , "Martin K. Petersen" , 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 , Bart Van Assche , 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, open-iscsi@googlegroups.com, 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 Subject: Re: [PATCH 06/23] scsi: add a no_highmem flag to struct Scsi_Host Message-ID: <20240326060917.GC7108@lst.de> References: <20240324235448.2039074-1-hch@lst.de> <20240324235448.2039074-7-hch@lst.de> <80162a6e-12d1-4fd4-ac74-dc5388853323@kernel.org> Precedence: bulk X-Mailing-List: linux-ide@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: <80162a6e-12d1-4fd4-ac74-dc5388853323@kernel.org> User-Agent: Mutt/1.5.17 (2007-11-01) On Mon, Mar 25, 2024 at 04:26:55PM +0900, Damien Le Moal wrote: > On 3/25/24 08:54, 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. > > > > Signed-off-by: Christoph Hellwig > > The USB hunks could probably be moved to their own patch following this one ? Seems like a bit too much churn to me.