count_rsvd
count_rsvd(inode, orig_es.es_lblk + len1,
count_rsvd(inode, lblk, orig_es.es_len - len1,
count_rsvd(inode, es->es_lblk, es->es_len, es, &rc);
count_rsvd(inode, es->es_lblk, orig_len - len1,