uml: use DIV_ROUND_UP

I just saw similar patches in the janitor kernel's list, and spotted place it fits. Signed-off-by: Jiri Olsa <[email protected]> Signed-off-by: Jeff Dike <[email protected]> Cc: WANG Cong <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
mhuangwm · May 13, 2008 · 6d07424 · 6d07424
1 parent 63b9871
commit 6d07424
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
@@ -1178,8 +1178,8 @@ 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];