+static int loop_set_capacity(struct loop_device *lo, struct block_device *bdev)
+{
+ int err;
+ sector_t sec;
+ loff_t sz;
+
+ err = -ENXIO;
+ if (unlikely(lo->lo_state != Lo_bound))
+ goto out;
+ err = figure_loop_size(lo);
+ if (unlikely(err))
+ goto out;
+ sec = get_capacity(lo->lo_disk);
+ /* the width of sector_t may be narrow for bit-shift */
+ sz = sec;
+ sz <<= 9;
+ mutex_lock(&bdev->bd_mutex);
+ bd_set_size(bdev, sz);
+ mutex_unlock(&bdev->bd_mutex);
+
+ out:
+ return err;
+}
+