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authorGeert Uytterhoeven <geert@linux-m68k.org>2007-05-02 00:33:07 +0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-05 04:59:08 +0400
commit254f9c5cd2d3b41e64f59df816630f7ca5548a8a (patch)
treef6e212c09a80e41ba228525869a269c75cbfc75a /include/linux/highmem.h
parentf5456e040eaac7eb9545d49c38984af2047699be (diff)
downloadlinux-254f9c5cd2d3b41e64f59df816630f7ca5548a8a.tar.xz
Convert non-highmem kmap_atomic() to static inline function
Convert kmap_atomic() in the non-highmem case from a macro to a static inline function, for better type-checking and the ability to pass void pointers instead of struct page pointers. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/highmem.h')
-rw-r--r--include/linux/highmem.h10
1 files changed, 8 insertions, 2 deletions
diff --git a/include/linux/highmem.h b/include/linux/highmem.h
index 645d440807c2..7bab8eae2341 100644
--- a/include/linux/highmem.h
+++ b/include/linux/highmem.h
@@ -42,8 +42,14 @@ static inline void *kmap(struct page *page)
#define kunmap(page) do { (void) (page); } while (0)
-#define kmap_atomic(page, idx) \
- ({ pagefault_disable(); page_address(page); })
+#include <asm/kmap_types.h>
+
+static inline void *kmap_atomic(struct page *page, enum km_type idx)
+{
+ pagefault_disable();
+ return 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)