1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index c100a47bc157..bc552bbad83e 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -1694,9 +1694,8 @@ int bitmap_create(struct mddev *mddev)
         bitmap->counts.chunkshift = (ffz(~mddev->bitmap_info.chunksize)
                               - BITMAP_BLOCK_SHIFT);
 
-        chunks = (blocks + (1 << bitmap->counts.chunkshift) - 1) >>
-                        bitmap->counts.chunkshift;
-        pages = (chunks + PAGE_COUNTER_RATIO - 1) / PAGE_COUNTER_RATIO;
+        chunks = DIV_ROUND_UP_SECTOR_T(blocks, 1 << bitmap->counts.chunkshift);
+        pages = DIV_ROUND_UP(chunks, PAGE_COUNTER_RATIO);
 
         BUG_ON(!pages);