diff options
Diffstat (limited to 'include/linux/highmem.h')
| -rw-r--r-- | include/linux/highmem.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/include/linux/highmem.h b/include/linux/highmem.h index 9c559c670299..091b32dff2d1 100644 --- a/include/linux/highmem.h +++ b/include/linux/highmem.h @@ -130,7 +130,6 @@ static inline struct page *kmap_to_page(void *addr) static inline unsigned long totalhigh_pages(void) { return 0UL; } -#ifndef ARCH_HAS_KMAP static inline void *kmap(struct page *page) { might_sleep(); @@ -143,6 +142,9 @@ static inline void kunmap_high(struct page *page) static inline void kunmap(struct page *page) { +#ifdef ARCH_HAS_FLUSH_ON_KUNMAP + kunmap_flush_on_unmap(page_address(page)); +#endif } static inline void *kmap_atomic(struct page *page) @@ -156,15 +158,17 @@ static inline void *kmap_atomic(struct page *page) static inline void kunmap_atomic_high(void *addr) { /* - * Nothing to do in the CONFIG_HIGHMEM=n case as kunmap_atomic() + * Mostly nothing to do in the CONFIG_HIGHMEM=n case as kunmap_atomic() * handles re-enabling faults + preemption */ +#ifdef ARCH_HAS_FLUSH_ON_KUNMAP + kunmap_flush_on_unmap(addr); +#endif } #define kmap_atomic_pfn(pfn) kmap_atomic(pfn_to_page(pfn)) #define kmap_flush_unused() do {} while(0) -#endif #endif /* CONFIG_HIGHMEM */ |