On Mon, Apr 08, 2019 at 04:16:17PM +0100, Paul Durrant wrote: > This patch introduces a poll callback for event channel fd-s and uses > this to invoke the channel callback function. > > To properly support polling, it is necessary for the event channel callback > function to return a boolean saying whether it has done any useful work or > not. Thus xen_block_dataplane_event() is modified to directly invoke > xen_block_handle_requests() and the latter only returns true if it actually > processes any requests. This also means that the call to qemu_bh_schedule() > is moved into xen_block_complete_aio(), which is more intuitive since the > only reason for doing a deferred poll of the shared ring should be because > there were previously insufficient resources to fully complete a previous > poll. > > Signed-off-by: Paul Durrant <paul.durr...@citrix.com> > ---
Reviewed-by: Anthony PERARD <anthony.per...@citrix.com> Thanks, -- Anthony PERARD
