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 919802574D; Wed, 12 Jun 2024 04:50:32 +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=1718167833; cv=none; b=HRlT9xuTmzzGxrnsM/CC12AmwlslMtZfokEHJ16ks3tahfsLfbocV9VoRrvHREuQ6JFmzKBAhtwK0Elz5q9rz8Lt2TCALtpx7QYOFzT7MynAFjd82YdryjQwZwh+MGV0ELMrwPyzSKiakCgrkhh0FVzHLGCSbzSfwZZxB1ZbTkU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718167833; c=relaxed/simple; bh=24WVAZW1MJ2/foqmOc06hguUKkgxj8Jmo0NHu5hLLFw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=eC2i4elVUoErhq2zMxW5vVp1ho7nvAGpppYY6AG1JRL3otG9UFfHLYCnFuKR62ITsQK81FzT/lSxwC2VtF8RZTl+yT1DG5GUBwDkqKTQqd8Znfr6JZQB9U9gSH2c4WiePzOQoNfpFZEV14Z/XcEHveY4hWxEY0aiez/tdGH2UQc= 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 27E1B68BEB; Wed, 12 Jun 2024 06:50:27 +0200 (CEST) Date: Wed, 12 Jun 2024 06:50:26 +0200 From: Christoph Hellwig To: Damien Le Moal Cc: Christoph Hellwig , Jens Axboe , Geert Uytterhoeven , Richard Weinberger , Philipp Reisner , Lars Ellenberg , Christoph =?iso-8859-1?Q?B=F6hmwalder?= , Josef Bacik , Ming Lei , "Michael S. Tsirkin" , Jason Wang , Roger Pau =?iso-8859-1?Q?Monn=E9?= , Alasdair Kergon , Mike Snitzer , Mikulas Patocka , Song Liu , Yu Kuai , Vineeth Vijayan , "Martin K. Petersen" , linux-m68k@lists.linux-m68k.org, linux-um@lists.infradead.org, drbd-dev@lists.linbit.com, nbd@other.debian.org, linuxppc-dev@lists.ozlabs.org, ceph-devel@vger.kernel.org, virtualization@lists.linux.dev, xen-devel@lists.xenproject.org, linux-bcache@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, linux-mmc@vger.kernel.org, linux-mtd@lists.infradead.org, nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, linux-block@vger.kernel.org Subject: Re: [PATCH 10/26] xen-blkfront: don't disable cache flushes when they fail Message-ID: <20240612045026.GA26653@lst.de> References: <20240611051929.513387-1-hch@lst.de> <20240611051929.513387-11-hch@lst.de> Precedence: bulk X-Mailing-List: linux-bcache@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: User-Agent: Mutt/1.5.17 (2007-11-01) On Tue, Jun 11, 2024 at 04:30:39PM +0900, Damien Le Moal wrote: > On 6/11/24 2:19 PM, Christoph Hellwig wrote: > > blkfront always had a robust negotiation protocol for detecting a write > > cache. Stop simply disabling cache flushes when they fail as that is > > a grave error. > > > > Signed-off-by: Christoph Hellwig > > Looks good to me but maybe mention that removal of xlvbd_flush() as well ? > And it feels like the "stop disabling cache flushes when they fail" part should > be a fix patch sent separately... I'll move the patch to the front of the series to get more attention from the maintainers, but otherwise the xlvbd_flush remova lis the really trivial part here.