From: Rolf Eike Beer <eike-kernel@sf-tec.de>

Replace a hand coded version of DIV_ROUND_UP().

Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memory.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -puN mm/memory.c~mm-use-div_round_up-in-mm-memoryc mm/memory.c
--- a/mm/memory.c~mm-use-div_round_up-in-mm-memoryc
+++ a/mm/memory.c
@@ -2653,7 +2653,7 @@ int make_pages_present(unsigned long add
 	write = (vma->vm_flags & VM_WRITE) != 0;
 	BUG_ON(addr >= end);
 	BUG_ON(end > vma->vm_end);
-	len = (end+PAGE_SIZE-1)/PAGE_SIZE-addr/PAGE_SIZE;
+	len = DIV_ROUND_UP(end, PAGE_SIZE) - addr/PAGE_SIZE;
 	ret = get_user_pages(current, current->mm, addr,
 			len, write, 0, NULL, NULL);
 	if (ret < 0)
_