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

This regression has been introduced in

commit 43046020c6cbef264e87bf330d993fbd1436b262
Author: Daniel Vetter <daniel.vetter@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@linux-m68k.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index c93a9a9bcd358565ec44a71cd223aa161c750eb2..efa26b4da8d2b9d2479284bc9cbaeff61913d634 100644 (file)
--- 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;