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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 68AF6C432BE for ; Sat, 28 Aug 2021 07:38:36 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F2660610CC for ; Sat, 28 Aug 2021 07:38:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org F2660610CC Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=tempfail smtp.mailfrom=redhat.com Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-480-QJ_0qqjfP-yaoBUCILj-Ag-1; Sat, 28 Aug 2021 03:38:33 -0400 X-MC-Unique: QJ_0qqjfP-yaoBUCILj-Ag-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2391A1082922; Sat, 28 Aug 2021 07:38:29 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id D7450100AE35; Sat, 28 Aug 2021 07:38:28 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id A912F181A0F1; Sat, 28 Aug 2021 07:38:28 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id 17S7cRem008834 for ; Sat, 28 Aug 2021 03:38:27 -0400 Received: by smtp.corp.redhat.com (Postfix) id 0FA49215CDD3; Sat, 28 Aug 2021 07:38:27 +0000 (UTC) Received: from mimecast-mx02.redhat.com (mimecast05.extmail.prod.ext.rdu2.redhat.com [10.11.55.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 0A5EA215CDD1 for ; Sat, 28 Aug 2021 07:38:24 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [207.211.31.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 14A92800882 for ; Sat, 28 Aug 2021 07:38:24 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-431-Z6wL1qfhPWiIsB2tsEXgLg-1; Sat, 28 Aug 2021 03:38:21 -0400 X-MC-Unique: Z6wL1qfhPWiIsB2tsEXgLg-1 Received: from hch by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1mJssf-00FNYs-A6; Sat, 28 Aug 2021 07:36:12 +0000 Date: Sat, 28 Aug 2021 08:35:57 +0100 From: Christoph Hellwig To: Luis Chamberlain Message-ID: References: <20210823202930.137278-1-mcgrof@kernel.org> <20210823202930.137278-9-mcgrof@kernel.org> MIME-Version: 1.0 In-Reply-To: X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-loop: dm-devel@redhat.com Cc: ulf.hansson@linaro.org, snitzer@redhat.com, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, dm-devel@redhat.com, agk@redhat.com, beanhuo@micron.com, ming.lei@redhat.com, sagi@grimberg.me, linux-scsi@vger.kernel.org, Christoph Hellwig , jejb@linux.ibm.com, josef@toxicpanda.com, nbd@other.debian.org, linux-block@vger.kernel.org, avri.altman@wdc.com, kbusch@kernel.org, swboyd@chromium.org, bvanassche@acm.org, axboe@kernel.dk, martin.petersen@oracle.com, linux-mmc@vger.kernel.org, adrian.hunter@intel.com Subject: Re: [dm-devel] [PATCH 08/10] dm: add add_disk() error handling X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dm-devel-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Disposition: inline Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit On Fri, Aug 27, 2021 at 11:55:14AM -0700, Luis Chamberlain wrote: > > I think the add_disk should just return r. If you look at the > > callers they eventualy end up in dm_table_destroy, which does > > this cleanup. > > I don't see it. What part of dm_table_destroy() does this? Sorry, dm_destroy, not dm_table_destroy. For dm_early_create it's trivial as that calls both dm_table_destroy and dm_destroy in the error path. The normal table_load case is a separate ioctl, but if that fails userspace needs to call the DM_DEV_REMOVE_CMD to cleanup the state - similar to any other failure. -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel