[Xen-devel] Re: [PATCH][ioemu] Ignore the first watch fire in xenstore_process_dm_command_event()

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 16/06/2009 18:04, "Cui, Dexuan" <dexuan.cui@xxxxxxxxx> wrote:

> A straightforward thought is: we can ignore the first watch fire. Please see
> the below patch.
> However I'm not sure if this is the best fix. And for the other watches(like
> "logdirty", "hdc") set in xenstore_parse_domain_config(), I think we should
> also double check them even if no actual bug has been observed yet.
> 
> Please comment.

Can you not treat the watch firing as an indication of maybe-changed, and
decide what to do based on current values you read from xenstore from within
the watch handler?

 -- Keir



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