osd_req_op_extent_osd_data_bvec_pos
osd_req_op_extent_osd_data_bvec_pos(osd_req, which,
void osd_req_op_extent_osd_data_bvec_pos(struct ceph_osd_request *osd_req,
EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvec_pos);