On Tue, 2017-05-09 at 12:10 -0700, Andy Grover wrote: > From: Mikulas Patocka <[email protected]> > > This is the very simple patch for polling on the /dev/mapper/control > device. The select or poll function waits until any event happens on > any > dm device since opening the /dev/mapper/control device. When select > or > poll returns the device as readable, we must close and reopen the > device > to wait for new dm events.
Why have you done it that way? Couldn't you just save the dm_global_event_nr at the time poll() is called? Regards Martin -- Dr. Martin Wilck <[email protected]>, Tel. +49 (0)911 74053 2107SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham NortonHRB 21284 (AG Nürnberg) -- dm-devel mailing list [email protected] https://www.redhat.com/mailman/listinfo/dm-devel
