The patch titled
Subject: mm/devm_memremap_pages: introduce devm_memunmap_pages
has been added to the -mm tree. Its filename is
mm-devm_memremap_pages-introduce-devm_memunmap_pages.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-devm_memremap_pages-introduce-devm_memunmap_pages.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-devm_memremap_pages-introduce-devm_memunmap_pages.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Dan Williams <dan.j.williams@xxxxxxxxx>
Subject: mm/devm_memremap_pages: introduce devm_memunmap_pages
Use the new devm_relase_action() facility to allow
devm_memremap_pages_release() to be manually triggered.
Link: http://lkml.kernel.org/r/155727337088.292046.5774214552136776763.stgit@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Reviewed-by: Ira Weiny <ira.weiny@xxxxxxxxx>
Reviewed-by: Logan Gunthorpe <logang@xxxxxxxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: "Jérôme Glisse" <jglisse@xxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rafael@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/memremap.h | 6 ++++++
kernel/memremap.c | 6 ++++++
2 files changed, 12 insertions(+)
--- a/include/linux/memremap.h~mm-devm_memremap_pages-introduce-devm_memunmap_pages
+++ a/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(
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)
{
--- a/kernel/memremap.c~mm-devm_memremap_pages-introduce-devm_memunmap_pages
+++ a/kernel/memremap.c
@@ -269,6 +269,12 @@ void *devm_memremap_pages(struct device
}
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 */
_
Patches currently in -mm which might be from dan.j.williams@xxxxxxxxx are
drivers-base-devres-introduce-devm_release_action.patch
mm-devm_memremap_pages-introduce-devm_memunmap_pages.patch
pci-p2pdma-fix-the-gen_pool_add_virt-failure-path.patch
lib-genalloc-introduce-chunk-owners.patch
pci-p2pdma-track-pgmap-references-per-resource-not-globally.patch
mm-devm_memremap_pages-fix-final-page-put-race.patch
