diff options
Diffstat (limited to 'include/linux/highmem-internal.h')
| -rw-r--r-- | include/linux/highmem-internal.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/include/linux/highmem-internal.h b/include/linux/highmem-internal.h index c5a22177db85..1bbe96dc8be6 100644 --- a/include/linux/highmem-internal.h +++ b/include/linux/highmem-internal.h @@ -68,6 +68,26 @@ static inline void kmap_flush_unused(void) __kmap_flush_unused(); } +static inline void *kmap_local_page(struct page *page) +{ + return __kmap_local_page_prot(page, kmap_prot); +} + +static inline void *kmap_local_page_prot(struct page *page, pgprot_t prot) +{ + return __kmap_local_page_prot(page, prot); +} + +static inline void *kmap_local_pfn(unsigned long pfn) +{ + return __kmap_local_pfn_prot(pfn, kmap_prot); +} + +static inline void __kunmap_local(void *vaddr) +{ + kunmap_local_indexed(vaddr); +} + static inline void *kmap_atomic_prot(struct page *page, pgprot_t prot) { preempt_disable(); @@ -140,6 +160,28 @@ static inline void kunmap(struct page *page) #endif } +static inline void *kmap_local_page(struct page *page) +{ + return page_address(page); +} + +static inline void *kmap_local_page_prot(struct page *page, pgprot_t prot) +{ + return kmap_local_page(page); +} + +static inline void *kmap_local_pfn(unsigned long pfn) +{ + return kmap_local_page(pfn_to_page(pfn)); +} + +static inline void __kunmap_local(void *addr) +{ +#ifdef ARCH_HAS_FLUSH_ON_KUNMAP + kunmap_flush_on_unmap(addr); +#endif +} + static inline void *kmap_atomic(struct page *page) { preempt_disable(); @@ -181,4 +223,10 @@ do { \ __kunmap_atomic(__addr); \ } while (0) +#define kunmap_local(__addr) \ +do { \ + BUILD_BUG_ON(__same_type((__addr), struct page *)); \ + __kunmap_local(__addr); \ +} while (0) + #endif |