From patchwork Sun Jul 10 03:25:06 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Williams X-Patchwork-Id: 9222223 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id D1D1D60890 for ; Sun, 10 Jul 2016 03:27:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C7DBC284FE for ; Sun, 10 Jul 2016 03:27:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BC6C7285D0; Sun, 10 Jul 2016 03:27:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 8EEB5284FE for ; Sun, 10 Jul 2016 03:27:19 +0000 (UTC) Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id A33E11A1E48; Sat, 9 Jul 2016 20:28:02 -0700 (PDT) X-Original-To: linux-nvdimm@lists.01.org Delivered-To: linux-nvdimm@lists.01.org Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by ml01.01.org (Postfix) with ESMTP id EBED91A1E48 for ; Sat, 9 Jul 2016 20:28:00 -0700 (PDT) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga101.jf.intel.com with ESMTP; 09 Jul 2016 20:27:17 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos; i="5.28,339,1464678000"; d="scan'208"; a="1018785532" Received: from dwillia2-desk3.jf.intel.com (HELO dwillia2-desk3.amr.corp.intel.com) ([10.54.39.14]) by fmsmga002.fm.intel.com with ESMTP; 09 Jul 2016 20:27:18 -0700 Subject: [PATCH v2 07/17] libnvdimm: keep region data alive over namespace removal From: Dan Williams To: linux-nvdimm@lists.01.org Date: Sat, 09 Jul 2016 20:25:06 -0700 Message-ID: <146812110665.32932.12943031269797555126.stgit@dwillia2-desk3.amr.corp.intel.com> In-Reply-To: <146812106839.32932.2870621200867047059.stgit@dwillia2-desk3.amr.corp.intel.com> References: <146812106839.32932.2870621200867047059.stgit@dwillia2-desk3.amr.corp.intel.com> User-Agent: StGit/0.17.1-9-g687f MIME-Version: 1.0 X-BeenThere: linux-nvdimm@lists.01.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Linux-nvdimm developer list." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-fsdevel@vger.kernel.org, linux-acpi@vger.kernel.org, hch@lst.de, linux-kernel@vger.kernel.org Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" X-Virus-Scanned: ClamAV using ClamSMTP nd_region device driver data will be used in the namespace i/o path. Re-order nd_region_remove() to ensure this data stays live across namespace device removal Signed-off-by: Dan Williams --- drivers/nvdimm/region.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/nvdimm/region.c b/drivers/nvdimm/region.c index 333175dac8d5..8f241772ec0b 100644 --- a/drivers/nvdimm/region.c +++ b/drivers/nvdimm/region.c @@ -82,6 +82,8 @@ static int nd_region_remove(struct device *dev) { struct nd_region *nd_region = to_nd_region(dev); + device_for_each_child(dev, NULL, child_unregister); + /* flush attribute readers and disable */ nvdimm_bus_lock(dev); nd_region->ns_seed = NULL; @@ -91,7 +93,6 @@ static int nd_region_remove(struct device *dev) dev_set_drvdata(dev, NULL); nvdimm_bus_unlock(dev); - device_for_each_child(dev, NULL, child_unregister); return 0; }