Messages in this thread | | | Date | Mon, 23 Oct 2017 16:06:06 -0700 (PDT) | From | Stefano Stabellini <> | Subject | Re: [PATCH v5 11/13] xen/pvcalls: implement poll command |
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On Tue, 17 Oct 2017, Boris Ostrovsky wrote: > > +static unsigned int pvcalls_front_poll_passive(struct file *file, > > + struct pvcalls_bedata *bedata, > > + struct sock_mapping *map, > > + poll_table *wait) > > +{ > > + int notify, req_id, ret; > > + struct xen_pvcalls_request *req; > > + > > + if (test_bit(PVCALLS_FLAG_ACCEPT_INFLIGHT, > > + (void *)&map->passive.flags)) { > > + uint32_t req_id = READ_ONCE(map->passive.inflight_req_id); > > + > > + if (req_id != PVCALLS_INVALID_ID && > > + READ_ONCE(bedata->rsp[req_id].req_id) == req_id) > > + return POLLIN | POLLRDNORM; > > > Same READ_ONCE() question as for an earlier patch.
Same answer :-)
> > + > > + poll_wait(file, &map->passive.inflight_accept_req, wait); > > + return 0; > > + } > > + >
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