From patchwork Fri Aug 27 19:18:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luis Chamberlain X-Patchwork-Id: 12462837 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=-17.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 2066EC432BE for ; Fri, 27 Aug 2021 20:12:44 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 D611460F6C for ; Fri, 27 Aug 2021 20:12:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org D611460F6C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.173943.317348 (Exim 4.92) (envelope-from ) id 1mJiDC-0008Dn-AE; Fri, 27 Aug 2021 20:12:26 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 173943.317348; Fri, 27 Aug 2021 20:12:26 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mJiDC-0008Cy-1K; Fri, 27 Aug 2021 20:12:26 +0000 Received: by outflank-mailman (input) for mailman id 173943; Fri, 27 Aug 2021 19:18:39 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mJhN9-0001H3-Az for xen-devel@lists.xenproject.org; Fri, 27 Aug 2021 19:18:39 +0000 Received: from bombadil.infradead.org (unknown [2607:7c80:54:e::133]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 33cf3871-c71d-4647-9f20-7786643a7ee0; Fri, 27 Aug 2021 19:18:23 +0000 (UTC) Received: from mcgrof by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1mJhMh-00D5Aw-4U; Fri, 27 Aug 2021 19:18:11 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list X-Inumbo-ID: 33cf3871-c71d-4647-9f20-7786643a7ee0 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Sender:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description; bh=GDvHqyDUto9s8kCaWrxjdJXCPD/eZADtXbZwEghTKUI=; b=S4MU5GCIV4+ftrMG4UOyAR+oD8 s6X/ggsp+r3jrjgCJwZH9MmjalcMMVmkGAcukRynTXANDqDc15o8k5EE2KGFpHylTt+j06KAnH4Sk dMmhl8bM6iF6wtGGlcDTYtc68thxiP8k/mcSFCtvgZ/UuAHoyrGuNHC6mtfj5Jt7zpJ4vEIItRDN8 SeAcSeNlfz1yb9+hiXapNbS5nU+7XsMlZdTbTZTD+6L4ehekkEpODwTQjCj6LjJqP6Tr2i2qZntt8 loStFfJSEG7tz2Vot86bYUATs6Qr2LMowWD3tSb5Ip+ugS5qbBzTQqLb/jdhbzlqQp8bDGzCSXS8/ SHg3xDUA==; From: Luis Chamberlain To: axboe@kernel.dk, colyli@suse.de, kent.overstreet@gmail.com, kbusch@kernel.org, sagi@grimberg.me, vishal.l.verma@intel.com, dan.j.williams@intel.com, dave.jiang@intel.com, ira.weiny@intel.com, konrad.wilk@oracle.com, roger.pau@citrix.com, boris.ostrovsky@oracle.com, jgross@suse.com, sstabellini@kernel.org, minchan@kernel.org, ngupta@vflare.org, senozhatsky@chromium.org Cc: xen-devel@lists.xenproject.org, nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org, linux-bcache@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, Luis Chamberlain Subject: [PATCH 03/10] nvme-multipath: add error handling support for add_disk() Date: Fri, 27 Aug 2021 12:18:02 -0700 Message-Id: <20210827191809.3118103-4-mcgrof@kernel.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210827191809.3118103-1-mcgrof@kernel.org> References: <20210827191809.3118103-1-mcgrof@kernel.org> MIME-Version: 1.0 Sender: Luis Chamberlain We never checked for errors on add_disk() as this function returned void. Now that this is fixed, use the shiny new error handling. Since we now can tell for sure when a disk was added, move setting the bit NVME_NSHEAD_DISK_LIVE only when we did add the disk successfully. Nothing to do here as the cleanup is done elsewhere. Signed-off-by: Luis Chamberlain --- drivers/nvme/host/multipath.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c index 37ce3e8b1db2..f95643629fdb 100644 --- a/drivers/nvme/host/multipath.c +++ b/drivers/nvme/host/multipath.c @@ -479,13 +479,17 @@ int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl, struct nvme_ns_head *head) static void nvme_mpath_set_live(struct nvme_ns *ns) { struct nvme_ns_head *head = ns->head; + int rc; if (!head->disk) return; - if (!test_and_set_bit(NVME_NSHEAD_DISK_LIVE, &head->flags)) { - device_add_disk(&head->subsys->dev, head->disk, - nvme_ns_id_attr_groups); + if (!test_bit(NVME_NSHEAD_DISK_LIVE, &head->flags)) { + rc = device_add_disk(&head->subsys->dev, head->disk, + nvme_ns_id_attr_groups); + if (rc) + return; + set_bit(NVME_NSHEAD_DISK_LIVE, &head->flags); nvme_add_ns_head_cdev(head); }