Re: [Xen-devel] [PATCH 2/6] libxl: events: Deregister xenstore watch fd when not needed

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Tue, 2014-12-09 at 15:54 +0000, Ian Jackson wrote:
> We want to have no fd events registered when we are idle.
> In this patch, deal with the xenstore watch fd:
> 
> * Track the total number of active watches.
> * When deregistering a watch, or when watch registration fails, check
>   whether there are now no watches and if so deregister the fd.
> * On libxl teardown, the watch fd should therefore be unregistered.
>   assert that this is the case.
> 
> Signed-off-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>

Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>


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