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Convert non-highmem kmap_atomic() to static inline function

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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>
This commit is contained in:
Geert Uytterhoeven 2007-05-01 22:33:07 +02:00 committed by Linus Torvalds
parent f5456e040e
commit 254f9c5cd2
1 changed files with 8 additions and 2 deletions
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10
include/linux/highmem.h
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@ -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)