On Mon, Nov 10, 2008 at 09:19:21AM -0500, Mikulas Patocka wrote: > For device mapper, congested_fn asks every device in the tree and make OR > of their bits --- so if the user has 50 devices, it asks them all. > > For md-linear, md-raid0, md-raid1, md-raid10 and md-multipath it does the > same --- asking every device. > > If you have a better idea how to implement congested_fn, say it. Well, even asking 50 devices shouldn't take that long normally. Do you take some sleeping lock that might block forever? In that case I would just return congested for that device as it would delay pdflush otherwise. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
