From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 91FBDC64E69 for ; Fri, 20 Nov 2020 07:55:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 59E5622400 for ; Fri, 20 Nov 2020 07:55:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725919AbgKTHzb (ORCPT ); Fri, 20 Nov 2020 02:55:31 -0500 Received: from mx2.suse.de ([195.135.220.15]:44682 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725768AbgKTHzb (ORCPT ); Fri, 20 Nov 2020 02:55:31 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 9D32FAC23; Fri, 20 Nov 2020 07:55:29 +0000 (UTC) Subject: Re: [PATCH 69/78] block: remove the nr_sects field in struct hd_struct To: Christoph Hellwig , Jens Axboe Cc: Justin Sanders , Josef Bacik , Ilya Dryomov , Jack Wang , "Michael S. Tsirkin" , Jason Wang , Paolo Bonzini , Stefan Hajnoczi , Konrad Rzeszutek Wilk , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= , Minchan Kim , Mike Snitzer , Song Liu , "Martin K. Petersen" , dm-devel@redhat.com, linux-block@vger.kernel.org, drbd-dev@lists.linbit.com, nbd@other.debian.org, ceph-devel@vger.kernel.org, xen-devel@lists.xenproject.org, linux-raid@vger.kernel.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org References: <20201116145809.410558-1-hch@lst.de> <20201116145809.410558-70-hch@lst.de> From: Hannes Reinecke Message-ID: Date: Fri, 20 Nov 2020 08:55:27 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 MIME-Version: 1.0 In-Reply-To: <20201116145809.410558-70-hch@lst.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-raid@vger.kernel.org On 11/16/20 3:58 PM, Christoph Hellwig wrote: > Now that the hd_struct always has a block device attached to it, there is > no need for having two size field that just get out of sync. > > Additional the field in hd_struct did not use proper serializiation, > possibly allowing for torn writes. By only using the block_device field > this problem also gets fixed. > > Signed-off-by: Christoph Hellwig > --- > block/bio.c | 2 +- > block/blk-core.c | 2 +- > block/blk.h | 53 ---------------------- > block/genhd.c | 34 +++++++------- > block/partitions/core.c | 17 ++++--- > drivers/block/loop.c | 1 - > drivers/block/nbd.c | 2 +- > drivers/block/xen-blkback/common.h | 4 +- > drivers/md/bcache/super.c | 2 +- > drivers/s390/block/dasd_ioctl.c | 4 +- > drivers/target/target_core_pscsi.c | 7 +-- > fs/block_dev.c | 73 +----------------------------- > fs/f2fs/super.c | 2 +- > fs/pstore/blk.c | 2 +- > include/linux/genhd.h | 29 +++--------- > kernel/trace/blktrace.c | 2 +- > 16 files changed, 47 insertions(+), 189 deletions(-) > Reviewed-by: Hannes Reinecke Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@suse.de +49 911 74053 688 SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer