drbd_md_sync_page_io
if (drbd_md_sync_page_io(device, device->ldev, sector, REQ_OP_WRITE)) {
extern int drbd_md_sync_page_io(struct drbd_device *device,
if (drbd_md_sync_page_io(device, device->ldev, sector, REQ_OP_WRITE)) {
if (drbd_md_sync_page_io(device, bdev, bdev->md.md_offset,