[uml-devel] [PATCH] uml: use DIV_ROUND_UP

[Jiri O. <ols...@gm...>]

Hi,

I just saw similar patches in the janitor kernel's list,
and spotted place it fits.

Signed-off-by: Jiri Olsa <ols...@gm...>
---
 arch/um/drivers/ubd_kern.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index b1a77b1..1e579e4 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -1020,8 +1020,7 @@ static void cowify_bitmap(__u64 io_offset, int length, unsigned long *cow_mask,
 	 * by one word.  Thanks to Lynn Kerby for the fix and James McMechan
 	 * for the original diagnosis.
 	 */
-	if(*cow_offset == ((bitmap_len + sizeof(unsigned long) - 1) /
-			   sizeof(unsigned long) - 1))
+	if(*cow_offset == (DIV_ROUND_UP(bitmap_len, sizeof(unsigned long)) - 1))
 		(*cow_offset)--;
 
 	bitmap_words[0] = bitmap[*cow_offset];