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-rw-r--r--include/linux/highmem.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/highmem.h b/include/linux/highmem.h
index 645d440..bca8e2d 100644
--- a/include/linux/highmem.h
+++ b/include/linux/highmem.h
@@ -27,6 +27,8 @@ static inline void flush_kernel_dcache_page(struct page *page)
unsigned int nr_free_highpages(void);
extern unsigned long totalhigh_pages;
+void kmap_flush_unused(void);
+
#else /* CONFIG_HIGHMEM */
static inline unsigned int nr_free_highpages(void) { return 0; }
@@ -44,9 +46,13 @@ static inline void *kmap(struct page *page)
#define kmap_atomic(page, idx) \
({ pagefault_disable(); page_address(page); })
+#define kmap_atomic_prot(page, idx, prot) kmap_atomic(page, idx)
+
#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)
+
+#define kmap_flush_unused() do {} while(0)
#endif
#endif /* CONFIG_HIGHMEM */