The new_chunk fields of both struct mddev_s and struct mdp_superblock_1
are measured in bytes. However, in super_1_sync(), mddev->new_chunk
is converted to sectors before it assigned to sb->new_chunk.

This results in a too small number being stored in the in-memory
image of the superblock which could confuse the reshape process.

Signed-off-by: Andre Noll <redacted>
---
 drivers/md/md.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 48bdbdf..66e32e4 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c

@@ -1402,7 +1402,7 @@ static void super_1_sync(mddev_t *mddev, mdk_rdev_t *rdev)
 		sb->new_layout = cpu_to_le32(mddev->new_layout);
 		sb->delta_disks = cpu_to_le32(mddev->delta_disks);
 		sb->new_level = cpu_to_le32(mddev->new_level);
-		sb->new_chunk = cpu_to_le32(mddev->new_chunk>>9);
+		sb->new_chunk = cpu_to_le32(mddev->new_chunk);
 	}
 
 	max_dev = 0;

-- 
1.5.4.3