diff options
Diffstat (limited to 'include/linux/highmem.h')
| -rw-r--r-- | include/linux/highmem.h | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/include/linux/highmem.h b/include/linux/highmem.h index fd7d12daa94..645d440807c 100644 --- a/include/linux/highmem.h +++ b/include/linux/highmem.h @@ -3,11 +3,12 @@ #include <linux/fs.h> #include <linux/mm.h> +#include <linux/uaccess.h> #include <asm/cacheflush.h> #ifndef ARCH_HAS_FLUSH_ANON_PAGE -static inline void flush_anon_page(struct page *page, unsigned long vmaddr) +static inline void flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr) { } #endif @@ -41,9 +42,10 @@ static inline void *kmap(struct page *page) #define kunmap(page) do { (void) (page); } while (0) -#define kmap_atomic(page, idx) page_address(page) -#define kunmap_atomic(addr, idx) do { } while (0) -#define kmap_atomic_pfn(pfn, idx) page_address(pfn_to_page(pfn)) +#define kmap_atomic(page, idx) \ + ({ pagefault_disable(); page_address(page); }) +#define kunmap_atomic(addr, idx) do { pagefault_enable(); } while (0) +#define kmap_atomic_pfn(pfn, idx) kmap_atomic(pfn_to_page(pfn), (idx)) #define kmap_atomic_to_page(ptr) virt_to_page(ptr) #endif @@ -94,7 +96,10 @@ static inline void memclear_highpage_flush(struct page *page, unsigned int offse kunmap_atomic(kaddr, KM_USER0); } -static inline void copy_user_highpage(struct page *to, struct page *from, unsigned long vaddr) +#ifndef __HAVE_ARCH_COPY_USER_HIGHPAGE + +static inline void copy_user_highpage(struct page *to, struct page *from, + unsigned long vaddr, struct vm_area_struct *vma) { char *vfrom, *vto; @@ -107,6 +112,8 @@ static inline void copy_user_highpage(struct page *to, struct page *from, unsign smp_wmb(); } +#endif + static inline void copy_highpage(struct page *to, struct page *from) { char *vfrom, *vto; |