[libvirt] [PATCH 7/7] Fix busy-wait loop on closed file descriptor

Eric Blake eblake at redhat.com
Thu Aug 19 21:14:04 UTC 2010


On 08/17/2010 11:02 AM, Daniel P. Berrange wrote:
> When closing open streams after a client quits, the event
> callback was not removed. This mean that poll() was using
> a closed FD and returning POLLNVAL in a busy-wait loop.
> 
> * daemon/stream.c: Disconnect stream callbacks
> ---
>  daemon/stream.c |    7 ++++++-
>  1 files changed, 6 insertions(+), 1 deletions(-)
> 
> diff --git a/daemon/stream.c b/daemon/stream.c
> index d64fe73..cac54ea 100644
> --- a/daemon/stream.c
> +++ b/daemon/stream.c
> @@ -108,6 +108,7 @@ remoteStreamEvent(virStreamPtr st, int events, void *opaque)
>          remote_error rerr;
>          memset(&rerr, 0, sizeof rerr);
>          stream->closed = 1;
> +        virStreamEventRemoveCallback(stream->st);
>          virStreamAbort(stream->st);

ACK.

-- 
Eric Blake   eblake at redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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