diff options
| author | Christoph Hellwig <hch@lst.de> | 2017-12-29 08:54:05 +0100 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2018-01-08 11:46:23 -0800 |
| commit | e8d5134833006a46fcbefc5f4a84d0b62bd520e7 (patch) | |
| tree | dbd532f4ef91828e251a291c967ee3afe71fd475 /include/linux/memremap.h | |
| parent | e7744aa25cffe26d3767c9ffcf4e130cca1dff00 (diff) | |
memremap: change devm_memremap_pages interface to use struct dev_pagemap
This new interface is similar to how struct device (and many others)
work. The caller initializes a 'struct dev_pagemap' as required
and calls 'devm_memremap_pages'. This allows the pagemap structure to
be embedded in another structure and thus container_of can be used. In
this way application specific members can be stored in a containing
struct.
This will be used by the P2P infrastructure and HMM could probably
be cleaned up to use it as well (instead of having it's own, similar
'hmm_devmem_pages_create' function).
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/linux/memremap.h')
| -rw-r--r-- | include/linux/memremap.h | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/include/linux/memremap.h b/include/linux/memremap.h index 1cb5f39d25c1..7b4899c06f49 100644 --- a/include/linux/memremap.h +++ b/include/linux/memremap.h @@ -123,8 +123,7 @@ struct dev_pagemap { }; #ifdef CONFIG_ZONE_DEVICE -void *devm_memremap_pages(struct device *dev, struct resource *res, - struct percpu_ref *ref, struct vmem_altmap *altmap); +void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap); struct dev_pagemap *get_dev_pagemap(unsigned long pfn, struct dev_pagemap *pgmap); @@ -134,8 +133,7 @@ void vmem_altmap_free(struct vmem_altmap *altmap, unsigned long nr_pfns); static inline bool is_zone_device_page(const struct page *page); #else static inline void *devm_memremap_pages(struct device *dev, - struct resource *res, struct percpu_ref *ref, - struct vmem_altmap *altmap) + struct dev_pagemap *pgmap) { /* * Fail attempts to call devm_memremap_pages() without |