Re: [Xen-devel] [PATCH 1/3] xen / notify: introduce a new XenWatchList abstraction

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

On Wed, Sep 11, 2019 at 03:36:16PM +0100, Paul Durrant wrote:
> Xenstore watch call-backs are already abstracted away from XenBus using
> the XenWatch data structure but the associated NotifierList manipulation
> and file handle registation is still open coded in various xen_bus_...()
                  ^ registration
> functions.
> This patch creates a new XenWatchList data structure to allow these
> interactions to be abstracted away from XenBus as well. This is in
> preparation for a subsequent patch which will introduce separate watch lists
> for XenBus and XenDevice objects.
> 
> NOTE: This patch also introduces a new NotifierListEmpty() helper function
                                         ^ notifier_list_empty() ?

>       for the purposes of adding an assertion that a XenWatchList is not
>       freed whilst its associated NotifierList is still occupied.
> 
> Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>

Reviewed-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>

-- 
Anthony PERARD

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