From: Dan Williams <dan.j.williams@intel.com>
To: akpm@linux-foundation.org
Cc: linux-nvdimm@lists.01.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, Bjorn Helgaas <bhelgaas@google.com>,
Christoph Hellwig <hch@lst.de>
Subject: [PATCH v2 2/6] mm/devm_memremap_pages: Introduce devm_memunmap_pages
Date: Tue, 07 May 2019 16:56:10 -0700 [thread overview]
Message-ID: <155727337088.292046.5774214552136776763.stgit@dwillia2-desk3.amr.corp.intel.com> (raw)
In-Reply-To: <155727335978.292046.12068191395005445711.stgit@dwillia2-desk3.amr.corp.intel.com>
Use the new devm_relase_action() facility to allow
devm_memremap_pages_release() to be manually triggered.
Cc: Logan Gunthorpe <logang@deltatee.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
include/linux/memremap.h | 6 ++++++
kernel/memremap.c | 6 ++++++
2 files changed, 12 insertions(+)
diff --git a/include/linux/memremap.h b/include/linux/memremap.h
index f0628660d541..7601ee314c4a 100644
--- a/include/linux/memremap.h
+++ b/include/linux/memremap.h
@@ -100,6 +100,7 @@ struct dev_pagemap {
#ifdef CONFIG_ZONE_DEVICE
void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap);
+void devm_memunmap_pages(struct device *dev, struct dev_pagemap *pgmap);
struct dev_pagemap *get_dev_pagemap(unsigned long pfn,
struct dev_pagemap *pgmap);
@@ -118,6 +119,11 @@ static inline void *devm_memremap_pages(struct device *dev,
return ERR_PTR(-ENXIO);
}
+static inline void devm_memunmap_pages(struct device *dev,
+ struct dev_pagemap *pgmap)
+{
+}
+
static inline struct dev_pagemap *get_dev_pagemap(unsigned long pfn,
struct dev_pagemap *pgmap)
{
diff --git a/kernel/memremap.c b/kernel/memremap.c
index a856cb5ff192..65afbacab44e 100644
--- a/kernel/memremap.c
+++ b/kernel/memremap.c
@@ -266,6 +266,12 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap)
}
EXPORT_SYMBOL_GPL(devm_memremap_pages);
+void devm_memunmap_pages(struct device *dev, struct dev_pagemap *pgmap)
+{
+ devm_release_action(dev, devm_memremap_pages_release, pgmap);
+}
+EXPORT_SYMBOL_GPL(devm_memunmap_pages);
+
unsigned long vmem_altmap_offset(struct vmem_altmap *altmap)
{
/* number of pfns from base where pfn_to_page() is valid */
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WARNING: multiple messages have this Message-ID (diff)
From: Dan Williams <dan.j.williams@intel.com>
To: akpm@linux-foundation.org
Cc: Logan Gunthorpe <logang@deltatee.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Christoph Hellwig <hch@lst.de>, Ira Weiny <ira.weiny@intel.com>,
linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org,
linux-mm@kvack.org
Subject: [PATCH v2 2/6] mm/devm_memremap_pages: Introduce devm_memunmap_pages
Date: Tue, 07 May 2019 16:56:10 -0700 [thread overview]
Message-ID: <155727337088.292046.5774214552136776763.stgit@dwillia2-desk3.amr.corp.intel.com> (raw)
In-Reply-To: <155727335978.292046.12068191395005445711.stgit@dwillia2-desk3.amr.corp.intel.com>
Use the new devm_relase_action() facility to allow
devm_memremap_pages_release() to be manually triggered.
Cc: Logan Gunthorpe <logang@deltatee.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
include/linux/memremap.h | 6 ++++++
kernel/memremap.c | 6 ++++++
2 files changed, 12 insertions(+)
diff --git a/include/linux/memremap.h b/include/linux/memremap.h
index f0628660d541..7601ee314c4a 100644
--- a/include/linux/memremap.h
+++ b/include/linux/memremap.h
@@ -100,6 +100,7 @@ struct dev_pagemap {
#ifdef CONFIG_ZONE_DEVICE
void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap);
+void devm_memunmap_pages(struct device *dev, struct dev_pagemap *pgmap);
struct dev_pagemap *get_dev_pagemap(unsigned long pfn,
struct dev_pagemap *pgmap);
@@ -118,6 +119,11 @@ static inline void *devm_memremap_pages(struct device *dev,
return ERR_PTR(-ENXIO);
}
+static inline void devm_memunmap_pages(struct device *dev,
+ struct dev_pagemap *pgmap)
+{
+}
+
static inline struct dev_pagemap *get_dev_pagemap(unsigned long pfn,
struct dev_pagemap *pgmap)
{
diff --git a/kernel/memremap.c b/kernel/memremap.c
index a856cb5ff192..65afbacab44e 100644
--- a/kernel/memremap.c
+++ b/kernel/memremap.c
@@ -266,6 +266,12 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap)
}
EXPORT_SYMBOL_GPL(devm_memremap_pages);
+void devm_memunmap_pages(struct device *dev, struct dev_pagemap *pgmap)
+{
+ devm_release_action(dev, devm_memremap_pages_release, pgmap);
+}
+EXPORT_SYMBOL_GPL(devm_memunmap_pages);
+
unsigned long vmem_altmap_offset(struct vmem_altmap *altmap)
{
/* number of pfns from base where pfn_to_page() is valid */
next prev parent reply other threads:[~2019-05-08 0:09 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-07 23:55 [PATCH v2 0/6] mm/devm_memremap_pages: Fix page release race Dan Williams
2019-05-07 23:55 ` Dan Williams
2019-05-07 23:56 ` [PATCH v2 1/6] drivers/base/devres: Introduce devm_release_action() Dan Williams
2019-05-07 23:56 ` Dan Williams
2019-05-14 19:12 ` Greg Kroah-Hartman
2019-05-14 19:12 ` Greg Kroah-Hartman
2019-05-14 19:24 ` Dan Williams
2019-05-14 19:24 ` Dan Williams
2019-05-14 19:24 ` Dan Williams
2019-05-07 23:56 ` Dan Williams [this message]
2019-05-07 23:56 ` [PATCH v2 2/6] mm/devm_memremap_pages: Introduce devm_memunmap_pages Dan Williams
2019-05-07 23:56 ` [PATCH v2 3/6] PCI/P2PDMA: Fix the gen_pool_add_virt() failure path Dan Williams
2019-05-07 23:56 ` Dan Williams
2019-05-07 23:56 ` [PATCH v2 4/6] lib/genalloc: Introduce chunk owners Dan Williams
2019-05-07 23:56 ` Dan Williams
2019-05-07 23:56 ` [PATCH v2 5/6] PCI/P2PDMA: Track pgmap references per resource, not globally Dan Williams
2019-05-07 23:56 ` Dan Williams
2019-05-07 23:56 ` [PATCH v2 6/6] mm/devm_memremap_pages: Fix final page put race Dan Williams
2019-05-07 23:56 ` Dan Williams
2019-05-08 17:05 ` [PATCH v2 0/6] mm/devm_memremap_pages: Fix page release race Logan Gunthorpe
2019-05-08 17:05 ` Logan Gunthorpe
2019-05-13 19:22 ` Logan Gunthorpe
2019-05-13 19:22 ` Logan Gunthorpe
2019-05-14 18:51 ` Jane Chu
2019-05-14 18:51 ` Jane Chu
2019-05-14 19:04 ` Dan Williams
2019-05-14 19:04 ` Dan Williams
2019-05-14 21:18 ` Jane Chu
2019-05-16 16:45 ` Jane Chu
2019-05-16 21:42 ` jane.chu
2019-05-16 21:42 ` jane.chu
2019-05-16 21:51 ` Dan Williams
2019-05-16 21:51 ` Dan Williams
2019-05-17 0:01 ` Jane Chu
2019-05-17 0:01 ` Jane Chu
2019-05-31 4:17 ` Dan Williams
2019-05-31 4:17 ` Dan Williams
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