/* Send a mesasge to xenbus, in the same fashion as xb_write, and
block waiting for a reply. The reply is malloced and should be
freed by the caller. */
struct xsd_sockmsg *
xenbus_msg_reply(int type,
xenbus_transaction_t trans,
struct write_req *io,
int nr_reqs)
{
int id;
struct xsd_sockmsg *rep;
id = allocate_xenbus_id();
xb_write(type, id, trans, io, nr_reqs);
DEBUG("waiting on response to request %d\n", id);
wait_event(&req_info[id].waitq, req_info[id].ready);
DEBUG("woke up on response to request %d\n", id);
rmb();
rep = req_info[id].reply;
BUG_ON(rep->req_id != id);
release_xenbus_id(id);
return rep;
}
/* Send a mesasge to xenbus, in the same fashion as xb_write, and
block waiting for a reply. The reply is malloced and should be
freed by the caller. */
struct xsd_sockmsg *
xenbus_msg_reply(int type,
xenbus_transaction_t trans,
struct write_req *io,
int nr_reqs)
{
int id;
DEFINE_WAIT(w);
struct xsd_sockmsg *rep;
id = allocate_xenbus_id();
add_waiter(w, req_info[id].waitq);
xb_write(type, id, trans, io, nr_reqs);
schedule();
remove_waiter(w, req_info[id].waitq);
wake(current);
rep = req_info[id].reply;
BUG_ON(rep->req_id != id);
release_xenbus_id(id);
return rep;
}
