On Wed, 13 Feb 2008, Kanoj Sarcar wrote: > Oh ok, yes, I did see the discussion on this; sorry I > missed it. I do see what notifiers bring to the table > now (without endorsing it :-)). > > An orthogonal question is this: is IB/rdma the only > "culprit" that elevates page refcounts? Are there no > other subsystems which do a similar thing?
Yes there are actually two projects by SGI that also ran into the same issue that motivated the work on this. One is XPmem which allows sharing of process memory between different Linux instances and then there is the GRU which is a kind of DMA engine. Then there is KVM and probably multiple other drivers. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
