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Groups > linux.kernel > #1737903

Re: [PATCH v4 11/13] xen/pvcalls: implement poll command

From Boris Ostrovsky <boris.ostrovsky@oracle.com>
Newsgroups linux.kernel
Subject Re: [PATCH v4 11/13] xen/pvcalls: implement poll command
Date 2017-09-23 00:30 +0200
Message-ID <usECm-3jj-1@gated-at.bofh.it> (permalink)
References <uq7Ud-1h7-3@gated-at.bofh.it> <uq7Ud-1h7-5@gated-at.bofh.it> <uq7Ud-1h7-15@gated-at.bofh.it>
Organization linux.* mail to news gateway

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>  
> +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;


Do we need to clear PVCALLS_FLAG_ACCEPT_INFLIGHT? Or do we expect a
(subsequent?) accept() to do that?

-boris



> +
> +		poll_wait(file, &map->passive.inflight_accept_req, wait);
> +		return 0;
> +	}
> +

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Thread

[PATCH v4 01/13] xen/pvcalls: introduce the pvcalls xenbus frontend Stefano Stabellini <sstabellini@kernel.org> - 2017-09-16 01:10 +0200
  [PATCH v4 11/13] xen/pvcalls: implement poll command Stefano Stabellini <sstabellini@kernel.org> - 2017-09-16 01:10 +0200
    Re: [PATCH v4 11/13] xen/pvcalls: implement poll command Andrea Parri <parri.andrea@gmail.com> - 2017-09-19 17:30 +0200
    Re: [PATCH v4 11/13] xen/pvcalls: implement poll command Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-09-23 00:30 +0200
  [PATCH v4 12/13] xen/pvcalls: implement release command Stefano Stabellini <sstabellini@kernel.org> - 2017-09-16 01:10 +0200
    Re: [PATCH v4 12/13] xen/pvcalls: implement release command Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-09-23 00:50 +0200
    Re: [PATCH v4 12/13] xen/pvcalls: implement release command Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-09-23 00:50 +0200
  [PATCH v4 02/13] xen/pvcalls: implement frontend disconnect Stefano Stabellini <sstabellini@kernel.org> - 2017-09-16 01:10 +0200
    Re: [PATCH v4 02/13] xen/pvcalls: implement frontend disconnect Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-09-20 22:40 +0200
    Re: [PATCH v4 02/13] xen/pvcalls: implement frontend disconnect Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-09-20 23:10 +0200
  [PATCH v4 10/13] xen/pvcalls: implement recvmsg Stefano Stabellini <sstabellini@kernel.org> - 2017-09-16 01:10 +0200
    Re: [PATCH v4 10/13] xen/pvcalls: implement recvmsg Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-09-23 00:10 +0200
  [PATCH v4 04/13] xen/pvcalls: implement socket command and handle events Stefano Stabellini <sstabellini@kernel.org> - 2017-09-16 01:10 +0200
    Re: [PATCH v4 04/13] xen/pvcalls: implement socket command and handle  events Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-09-21 19:50 +0200
  [PATCH v4 03/13] xen/pvcalls: connect to the backend Stefano Stabellini <sstabellini@kernel.org> - 2017-09-16 01:10 +0200
    Re: [PATCH v4 03/13] xen/pvcalls: connect to the backend Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-09-20 23:20 +0200
  [PATCH v4 08/13] xen/pvcalls: implement accept command Stefano Stabellini <sstabellini@kernel.org> - 2017-09-16 01:10 +0200
    Re: [PATCH v4 08/13] xen/pvcalls: implement accept command Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-09-22 02:10 +0200
  [PATCH v4 09/13] xen/pvcalls: implement sendmsg Stefano Stabellini <sstabellini@kernel.org> - 2017-09-16 01:10 +0200
    Re: [PATCH v4 09/13] xen/pvcalls: implement sendmsg Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-09-23 00:00 +0200
  [PATCH v4 06/13] xen/pvcalls: implement bind command Stefano Stabellini <sstabellini@kernel.org> - 2017-09-16 01:10 +0200
    Re: [PATCH v4 06/13] xen/pvcalls: implement bind command Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-09-21 21:50 +0200
  [PATCH v4 05/13] xen/pvcalls: implement connect command Stefano Stabellini <sstabellini@kernel.org> - 2017-09-16 01:10 +0200
    Re: [PATCH v4 05/13] xen/pvcalls: implement connect command Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-09-21 20:30 +0200

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