/*
* aio fd read handler. It runs in the qemu context and calls the
* completion handling of completed rados aio operations.
*/
static void qemu_rbd_aio_event_reader(void *opaque)
{
BDRVRBDState *s = opaque;
ssize_t ret;
do {
char *p = (char *)&s->event_rcb;
/* now read the rcb pointer that was sent from a non qemu thread */
ret = read(s->fds[RBD_FD_READ], p + s->event_reader_pos,
sizeof(s->event_rcb) - s->event_reader_pos);
if (ret > 0) {
s->event_reader_pos += ret;
if (s->event_reader_pos == sizeof(s->event_rcb)) {
s->event_reader_pos = 0;
qemu_rbd_complete_aio(s->event_rcb);
}
}
} while (ret < 0 && errno == EINTR);
}
static void rbd_finish_bh(void *opaque)
{
RADOSCB *rcb = opaque;
qemu_rbd_complete_aio(rcb);
}
