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=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS autolearn=ham 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 641FAECDE44 for ; Wed, 31 Oct 2018 03:24:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 31B9120821 for ; Wed, 31 Oct 2018 03:24:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 31B9120821 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729068AbeJaMUx (ORCPT ); Wed, 31 Oct 2018 08:20:53 -0400 Received: from mga18.intel.com ([134.134.136.126]:25667 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728773AbeJaMUw (ORCPT ); Wed, 31 Oct 2018 08:20:52 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 30 Oct 2018 20:24:43 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,447,1534834800"; d="scan'208";a="104138659" Received: from dwillia2-desk3.jf.intel.com (HELO dwillia2-desk3.amr.corp.intel.com) ([10.54.39.16]) by orsmga001.jf.intel.com with ESMTP; 30 Oct 2018 20:24:42 -0700 Subject: [PATCH 1/8] device-dax: Kill dax_region ida From: Dan Williams To: linux-nvdimm@lists.01.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, dave.hansen@linux.intel.com Date: Tue, 30 Oct 2018 20:12:54 -0700 Message-ID: <154095557491.3271337.10354816564776020500.stgit@dwillia2-desk3.amr.corp.intel.com> In-Reply-To: <154095556915.3271337.12581429676272726902.stgit@dwillia2-desk3.amr.corp.intel.com> References: <154095556915.3271337.12581429676272726902.stgit@dwillia2-desk3.amr.corp.intel.com> User-Agent: StGit/0.18-2-gc94f MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit bbb3be170ac2 "device-dax: fix sysfs duplicate warnings" arranged for passing a dax instance-id to devm_create_dax_dev(), rather than generating one internally. Remove the dax_region ida and related code. Signed-off-by: Dan Williams --- drivers/dax/dax-private.h | 3 --- drivers/dax/device.c | 24 +++--------------------- 2 files changed, 3 insertions(+), 24 deletions(-) diff --git a/drivers/dax/dax-private.h b/drivers/dax/dax-private.h index b6fc4f04636d..d1b36a42132f 100644 --- a/drivers/dax/dax-private.h +++ b/drivers/dax/dax-private.h @@ -28,7 +28,6 @@ */ struct dax_region { int id; - struct ida ida; void *base; struct kref kref; struct device *dev; @@ -42,7 +41,6 @@ struct dax_region { * @region - parent region * @dax_dev - core dax functionality * @dev - device core - * @id - child id in the region * @num_resources - number of physical address extents in this device * @res - array of physical address ranges */ @@ -50,7 +48,6 @@ struct dev_dax { struct dax_region *region; struct dax_device *dax_dev; struct device dev; - int id; int num_resources; struct resource res[0]; }; diff --git a/drivers/dax/device.c b/drivers/dax/device.c index 948806e57cee..a5a670c1cd58 100644 --- a/drivers/dax/device.c +++ b/drivers/dax/device.c @@ -128,7 +128,6 @@ struct dax_region *alloc_dax_region(struct device *parent, int region_id, dax_region->pfn_flags = pfn_flags; kref_init(&dax_region->kref); dax_region->id = region_id; - ida_init(&dax_region->ida); dax_region->align = align; dax_region->dev = parent; dax_region->base = addr; @@ -582,8 +581,6 @@ static void dev_dax_release(struct device *dev) struct dax_region *dax_region = dev_dax->region; struct dax_device *dax_dev = dev_dax->dax_dev; - if (dev_dax->id >= 0) - ida_simple_remove(&dax_region->ida, dev_dax->id); dax_region_put(dax_region); put_dax(dax_dev); kfree(dev_dax); @@ -642,19 +639,7 @@ struct dev_dax *devm_create_dev_dax(struct dax_region *dax_region, } if (i < count) - goto err_id; - - if (id < 0) { - id = ida_simple_get(&dax_region->ida, 0, 0, GFP_KERNEL); - dev_dax->id = id; - if (id < 0) { - rc = id; - goto err_id; - } - } else { - /* region provider owns @id lifetime */ - dev_dax->id = -1; - } + goto err; /* * No 'host' or dax_operations since there is no access to this @@ -663,7 +648,7 @@ struct dev_dax *devm_create_dev_dax(struct dax_region *dax_region, dax_dev = alloc_dax(dev_dax, NULL, NULL); if (!dax_dev) { rc = -ENOMEM; - goto err_dax; + goto err; } /* from here on we're committed to teardown via dax_dev_release() */ @@ -700,10 +685,7 @@ struct dev_dax *devm_create_dev_dax(struct dax_region *dax_region, return dev_dax; - err_dax: - if (dev_dax->id >= 0) - ida_simple_remove(&dax_region->ida, dev_dax->id); - err_id: + err: kfree(dev_dax); return ERR_PTR(rc);