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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2008-10-31 16:32:19 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-11-27 23:53:48 +0000
commit303c6443659bc1dc911356f5de149f48ff1d97b8 (patch)
tree75da0aef28ec8e843cdeb24c96349bdf812e2740 /arch/arm/include
parent063b0a4207e43acbeff3d4b09f43e750e0212b48 (diff)
[ARM] clearpage: provide our own clear_user_highpage()
For similar reasons as copy_user_page(), we want to avoid the additional kmap_atomic if it's unnecessary. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include')
-rw-r--r--arch/arm/include/asm/page.h11
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/arm/include/asm/page.h b/arch/arm/include/asm/page.h
index 1581b8cf8f3..77747df713b 100644
--- a/arch/arm/include/asm/page.h
+++ b/arch/arm/include/asm/page.h
@@ -111,7 +111,7 @@
struct page;
struct cpu_user_fns {
- void (*cpu_clear_user_page)(void *p, unsigned long user);
+ void (*cpu_clear_user_highpage)(struct page *page, unsigned long vaddr);
void (*cpu_copy_user_highpage)(struct page *to, struct page *from,
unsigned long vaddr);
};
@@ -119,20 +119,21 @@ struct cpu_user_fns {
#ifdef MULTI_USER
extern struct cpu_user_fns cpu_user;
-#define __cpu_clear_user_page cpu_user.cpu_clear_user_page
+#define __cpu_clear_user_highpage cpu_user.cpu_clear_user_highpage
#define __cpu_copy_user_highpage cpu_user.cpu_copy_user_highpage
#else
-#define __cpu_clear_user_page __glue(_USER,_clear_user_page)
+#define __cpu_clear_user_highpage __glue(_USER,_clear_user_highpage)
#define __cpu_copy_user_highpage __glue(_USER,_copy_user_highpage)
-extern void __cpu_clear_user_page(void *p, unsigned long user);
+extern void __cpu_clear_user_highpage(struct page *page, unsigned long vaddr);
extern void __cpu_copy_user_highpage(struct page *to, struct page *from,
unsigned long vaddr);
#endif
-#define clear_user_page(addr,vaddr,pg) __cpu_clear_user_page(addr, vaddr)
+#define clear_user_highpage(page,vaddr) \
+ __cpu_clear_user_highpage(page, vaddr)
#define __HAVE_ARCH_COPY_USER_HIGHPAGE
#define copy_user_highpage(to,from,vaddr,vma) \