diff options
Diffstat (limited to 'include/linux/highmem.h')
| -rw-r--r-- | include/linux/highmem.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/highmem.h b/include/linux/highmem.h index ea5cdbd8c2c3..900f224bb640 100644 --- a/include/linux/highmem.h +++ b/include/linux/highmem.h @@ -276,4 +276,22 @@ static inline void copy_highpage(struct page *to, struct page *from) #endif +static inline void memcpy_from_page(char *to, struct page *page, + size_t offset, size_t len) +{ + char *from = kmap_atomic(page); + + memcpy(to, from + offset, len); + kunmap_atomic(from); +} + +static inline void memcpy_to_page(struct page *page, size_t offset, + const char *from, size_t len) +{ + char *to = kmap_atomic(page); + + memcpy(to + offset, from, len); + kunmap_atomic(to); +} + #endif /* _LINUX_HIGHMEM_H */ |