[PATCH] mm: fixup compilation error due to an asm write through a const pointer

[Daniel Vetter]

This regression has been introduced in

commit f56f821feb7b36223f309e0ec05986bb137ce418
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Sun Mar 25 19:47:41 2012 +0200

    mm: extend prefault helpers to fault in more than PAGE_SIZE

I have failed to notice this because x86 asm seems to happily compile
things as-is.

Reported-by: Geert Uytterhoeven <geert at linux-m68k.org
Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 include/linux/pagemap.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index c93a9a9..efa26b4 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -461,7 +461,7 @@ static inline int fault_in_pages_readable(const char __user 
*uaddr, int size)
 static inline int fault_in_multipages_writeable(char __user *uaddr, int size)
 {
        int ret;
-       const char __user *end = uaddr + size - 1;
+       char __user *end = uaddr + size - 1;

        if (unlikely(size == 0))
                return 0;
-- 
1.7.10