574 	struct buffer_head *bh_frozen;  in nilfs_mdt_freeze_buffer()  local
583 	bh_frozen = folio_buffers(folio);  in nilfs_mdt_freeze_buffer()
584 	if (!bh_frozen)  in nilfs_mdt_freeze_buffer()
585 		bh_frozen = create_empty_buffers(folio, 1 << blkbits, 0);  in nilfs_mdt_freeze_buffer()
587 	bh_frozen = get_nth_bh(bh_frozen,  in nilfs_mdt_freeze_buffer()
590 	if (!buffer_uptodate(bh_frozen))  in nilfs_mdt_freeze_buffer()
591 		nilfs_copy_buffer(bh_frozen, bh);  in nilfs_mdt_freeze_buffer()
592 	if (list_empty(&bh_frozen->b_assoc_buffers)) {  in nilfs_mdt_freeze_buffer()
593 		list_add_tail(&bh_frozen->b_assoc_buffers,  in nilfs_mdt_freeze_buffer()
597 		brelse(bh_frozen); /* already frozen */  in nilfs_mdt_freeze_buffer()
609 	struct buffer_head *bh_frozen = NULL;  in nilfs_mdt_get_frozen_buffer()  local
616 		bh_frozen = folio_buffers(folio);  in nilfs_mdt_get_frozen_buffer()
617 		if (bh_frozen) {  in nilfs_mdt_get_frozen_buffer()
620 			bh_frozen = get_nth_bh(bh_frozen, n);  in nilfs_mdt_get_frozen_buffer()
625 	return bh_frozen;  in nilfs_mdt_get_frozen_buffer()