diff options
Diffstat (limited to 'include/linux/highmem.h')
| -rw-r--r-- | include/linux/highmem.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/include/linux/highmem.h b/include/linux/highmem.h index fd7d12daa94f..3d8768b619e9 100644 --- a/include/linux/highmem.h +++ b/include/linux/highmem.h @@ -3,6 +3,7 @@ #include <linux/fs.h> #include <linux/mm.h> +#include <linux/uaccess.h> #include <asm/cacheflush.h> @@ -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 |