From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 913B6212A36FE for ; Wed, 26 Jun 2019 14:48:24 -0700 (PDT) Date: Wed, 26 Jun 2019 14:48:23 -0700 From: Ira Weiny Subject: Re: [PATCH 16/25] device-dax: use the dev_pagemap internal refcount Message-ID: <20190626214823.GD8399@iweiny-DESK2.sc.intel.com> References: <20190626122724.13313-1-hch@lst.de> <20190626122724.13313-17-hch@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190626122724.13313-17-hch@lst.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" To: Christoph Hellwig Cc: linux-nvdimm@lists.01.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mm@kvack.org, =?iso-8859-1?B?Suly9G1l?= Glisse , Jason Gunthorpe , Ben Skeggs , nouveau@lists.freedesktop.org List-ID: On Wed, Jun 26, 2019 at 02:27:15PM +0200, Christoph Hellwig wrote: > The functionality is identical to the one currently open coded in > device-dax. > > Signed-off-by: Christoph Hellwig Reviewed-by: Ira Weiny > --- > drivers/dax/dax-private.h | 4 ---- > drivers/dax/device.c | 43 --------------------------------------- > 2 files changed, 47 deletions(-) > > diff --git a/drivers/dax/dax-private.h b/drivers/dax/dax-private.h > index b4177aafbbd1..c915889d1769 100644 > --- a/drivers/dax/dax-private.h > +++ b/drivers/dax/dax-private.h > @@ -43,8 +43,6 @@ struct dax_region { > * @target_node: effective numa node if dev_dax memory range is onlined > * @dev - device core > * @pgmap - pgmap for memmap setup / lifetime (driver owned) > - * @ref: pgmap reference count (driver owned) > - * @cmp: @ref final put completion (driver owned) > */ > struct dev_dax { > struct dax_region *region; > @@ -52,8 +50,6 @@ struct dev_dax { > int target_node; > struct device dev; > struct dev_pagemap pgmap; > - struct percpu_ref ref; > - struct completion cmp; > }; > > static inline struct dev_dax *to_dev_dax(struct device *dev) > diff --git a/drivers/dax/device.c b/drivers/dax/device.c > index b5257038c188..1af823b2fe6b 100644 > --- a/drivers/dax/device.c > +++ b/drivers/dax/device.c > @@ -14,36 +14,6 @@ > #include "dax-private.h" > #include "bus.h" > > -static struct dev_dax *ref_to_dev_dax(struct percpu_ref *ref) > -{ > - return container_of(ref, struct dev_dax, ref); > -} > - > -static void dev_dax_percpu_release(struct percpu_ref *ref) > -{ > - struct dev_dax *dev_dax = ref_to_dev_dax(ref); > - > - dev_dbg(&dev_dax->dev, "%s\n", __func__); > - complete(&dev_dax->cmp); > -} > - > -static void dev_dax_percpu_exit(struct dev_pagemap *pgmap) > -{ > - struct dev_dax *dev_dax = container_of(pgmap, struct dev_dax, pgmap); > - > - dev_dbg(&dev_dax->dev, "%s\n", __func__); > - wait_for_completion(&dev_dax->cmp); > - percpu_ref_exit(pgmap->ref); > -} > - > -static void dev_dax_percpu_kill(struct dev_pagemap *pgmap) > -{ > - struct dev_dax *dev_dax = container_of(pgmap, struct dev_dax, pgmap); > - > - dev_dbg(&dev_dax->dev, "%s\n", __func__); > - percpu_ref_kill(pgmap->ref); > -} > - > static int check_vma(struct dev_dax *dev_dax, struct vm_area_struct *vma, > const char *func) > { > @@ -441,11 +411,6 @@ static void dev_dax_kill(void *dev_dax) > kill_dev_dax(dev_dax); > } > > -static const struct dev_pagemap_ops dev_dax_pagemap_ops = { > - .kill = dev_dax_percpu_kill, > - .cleanup = dev_dax_percpu_exit, > -}; > - > int dev_dax_probe(struct device *dev) > { > struct dev_dax *dev_dax = to_dev_dax(dev); > @@ -463,15 +428,7 @@ int dev_dax_probe(struct device *dev) > return -EBUSY; > } > > - init_completion(&dev_dax->cmp); > - rc = percpu_ref_init(&dev_dax->ref, dev_dax_percpu_release, 0, > - GFP_KERNEL); > - if (rc) > - return rc; > - > - dev_dax->pgmap.ref = &dev_dax->ref; > dev_dax->pgmap.type = MEMORY_DEVICE_DEVDAX; > - dev_dax->pgmap.ops = &dev_dax_pagemap_ops; > addr = devm_memremap_pages(dev, &dev_dax->pgmap); > if (IS_ERR(addr)) > return PTR_ERR(addr); > -- > 2.20.1 > > _______________________________________________ > Linux-nvdimm mailing list > Linux-nvdimm@lists.01.org > https://lists.01.org/mailman/listinfo/linux-nvdimm _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm 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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_MUTT 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 B932EC48BD3 for ; Wed, 26 Jun 2019 21:48:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 96AAF20665 for ; Wed, 26 Jun 2019 21:48:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726481AbfFZVsZ (ORCPT ); Wed, 26 Jun 2019 17:48:25 -0400 Received: from mga06.intel.com ([134.134.136.31]:46974 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726347AbfFZVsZ (ORCPT ); Wed, 26 Jun 2019 17:48:25 -0400 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2019 14:48:24 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,421,1557212400"; d="scan'208";a="183267604" Received: from iweiny-desk2.sc.intel.com ([10.3.52.157]) by fmsmga001.fm.intel.com with ESMTP; 26 Jun 2019 14:48:23 -0700 Date: Wed, 26 Jun 2019 14:48:23 -0700 From: Ira Weiny To: Christoph Hellwig Cc: Dan Williams , =?iso-8859-1?B?Suly9G1l?= Glisse , Jason Gunthorpe , Ben Skeggs , linux-nvdimm@lists.01.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mm@kvack.org, nouveau@lists.freedesktop.org Subject: Re: [PATCH 16/25] device-dax: use the dev_pagemap internal refcount Message-ID: <20190626214823.GD8399@iweiny-DESK2.sc.intel.com> References: <20190626122724.13313-1-hch@lst.de> <20190626122724.13313-17-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190626122724.13313-17-hch@lst.de> User-Agent: Mutt/1.11.1 (2018-12-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 26, 2019 at 02:27:15PM +0200, Christoph Hellwig wrote: > The functionality is identical to the one currently open coded in > device-dax. > > Signed-off-by: Christoph Hellwig Reviewed-by: Ira Weiny > --- > drivers/dax/dax-private.h | 4 ---- > drivers/dax/device.c | 43 --------------------------------------- > 2 files changed, 47 deletions(-) > > diff --git a/drivers/dax/dax-private.h b/drivers/dax/dax-private.h > index b4177aafbbd1..c915889d1769 100644 > --- a/drivers/dax/dax-private.h > +++ b/drivers/dax/dax-private.h > @@ -43,8 +43,6 @@ struct dax_region { > * @target_node: effective numa node if dev_dax memory range is onlined > * @dev - device core > * @pgmap - pgmap for memmap setup / lifetime (driver owned) > - * @ref: pgmap reference count (driver owned) > - * @cmp: @ref final put completion (driver owned) > */ > struct dev_dax { > struct dax_region *region; > @@ -52,8 +50,6 @@ struct dev_dax { > int target_node; > struct device dev; > struct dev_pagemap pgmap; > - struct percpu_ref ref; > - struct completion cmp; > }; > > static inline struct dev_dax *to_dev_dax(struct device *dev) > diff --git a/drivers/dax/device.c b/drivers/dax/device.c > index b5257038c188..1af823b2fe6b 100644 > --- a/drivers/dax/device.c > +++ b/drivers/dax/device.c > @@ -14,36 +14,6 @@ > #include "dax-private.h" > #include "bus.h" > > -static struct dev_dax *ref_to_dev_dax(struct percpu_ref *ref) > -{ > - return container_of(ref, struct dev_dax, ref); > -} > - > -static void dev_dax_percpu_release(struct percpu_ref *ref) > -{ > - struct dev_dax *dev_dax = ref_to_dev_dax(ref); > - > - dev_dbg(&dev_dax->dev, "%s\n", __func__); > - complete(&dev_dax->cmp); > -} > - > -static void dev_dax_percpu_exit(struct dev_pagemap *pgmap) > -{ > - struct dev_dax *dev_dax = container_of(pgmap, struct dev_dax, pgmap); > - > - dev_dbg(&dev_dax->dev, "%s\n", __func__); > - wait_for_completion(&dev_dax->cmp); > - percpu_ref_exit(pgmap->ref); > -} > - > -static void dev_dax_percpu_kill(struct dev_pagemap *pgmap) > -{ > - struct dev_dax *dev_dax = container_of(pgmap, struct dev_dax, pgmap); > - > - dev_dbg(&dev_dax->dev, "%s\n", __func__); > - percpu_ref_kill(pgmap->ref); > -} > - > static int check_vma(struct dev_dax *dev_dax, struct vm_area_struct *vma, > const char *func) > { > @@ -441,11 +411,6 @@ static void dev_dax_kill(void *dev_dax) > kill_dev_dax(dev_dax); > } > > -static const struct dev_pagemap_ops dev_dax_pagemap_ops = { > - .kill = dev_dax_percpu_kill, > - .cleanup = dev_dax_percpu_exit, > -}; > - > int dev_dax_probe(struct device *dev) > { > struct dev_dax *dev_dax = to_dev_dax(dev); > @@ -463,15 +428,7 @@ int dev_dax_probe(struct device *dev) > return -EBUSY; > } > > - init_completion(&dev_dax->cmp); > - rc = percpu_ref_init(&dev_dax->ref, dev_dax_percpu_release, 0, > - GFP_KERNEL); > - if (rc) > - return rc; > - > - dev_dax->pgmap.ref = &dev_dax->ref; > dev_dax->pgmap.type = MEMORY_DEVICE_DEVDAX; > - dev_dax->pgmap.ops = &dev_dax_pagemap_ops; > addr = devm_memremap_pages(dev, &dev_dax->pgmap); > if (IS_ERR(addr)) > return PTR_ERR(addr); > -- > 2.20.1 > > _______________________________________________ > Linux-nvdimm mailing list > Linux-nvdimm@lists.01.org > https://lists.01.org/mailman/listinfo/linux-nvdimm From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ira Weiny Subject: Re: [PATCH 16/25] device-dax: use the dev_pagemap internal refcount Date: Wed, 26 Jun 2019 14:48:23 -0700 Message-ID: <20190626214823.GD8399@iweiny-DESK2.sc.intel.com> References: <20190626122724.13313-1-hch@lst.de> <20190626122724.13313-17-hch@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <20190626122724.13313-17-hch-jcswGhMUV9g@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: nouveau-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "Nouveau" To: Christoph Hellwig Cc: linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org, linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, Jason Gunthorpe , Ben Skeggs , nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, Dan Williams List-Id: nouveau.vger.kernel.org T24gV2VkLCBKdW4gMjYsIDIwMTkgYXQgMDI6Mjc6MTVQTSArMDIwMCwgQ2hyaXN0b3BoIEhlbGx3 aWcgd3JvdGU6Cj4gVGhlIGZ1bmN0aW9uYWxpdHkgaXMgaWRlbnRpY2FsIHRvIHRoZSBvbmUgY3Vy cmVudGx5IG9wZW4gY29kZWQgaW4KPiBkZXZpY2UtZGF4Lgo+IAo+IFNpZ25lZC1vZmYtYnk6IENo cmlzdG9waCBIZWxsd2lnIDxoY2hAbHN0LmRlPgoKUmV2aWV3ZWQtYnk6IElyYSBXZWlueSA8aXJh LndlaW55QGludGVsLmNvbT4KCj4gLS0tCj4gIGRyaXZlcnMvZGF4L2RheC1wcml2YXRlLmggfCAg NCAtLS0tCj4gIGRyaXZlcnMvZGF4L2RldmljZS5jICAgICAgfCA0MyAtLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0KPiAgMiBmaWxlcyBjaGFuZ2VkLCA0NyBkZWxldGlvbnMo 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