Btrfs: Avoid 64 bit div for RAID10

Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 0e658c1..c11b6fd 100644 (file)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -724,7 +724,7 @@ again:
        if (type & (BTRFS_BLOCK_GROUP_RAID1 | BTRFS_BLOCK_GROUP_DUP))
                *num_bytes = calc_size;
        else if (type & BTRFS_BLOCK_GROUP_RAID10)
-               *num_bytes = calc_size * num_stripes / sub_stripes;
+               *num_bytes = calc_size * (num_stripes / sub_stripes);
        else
                *num_bytes = calc_size * num_stripes;