On Mon 10-07-17 12:54:21, Jerome Glisse wrote: > On Mon, Jul 10, 2017 at 06:36:52PM +0200, Michal Hocko wrote: > > On Mon 10-07-17 12:25:42, Jerome Glisse wrote: > > [...] > > > Bottom line is that we can always free and uncharge device memory > > > page just like any regular page. > > > > OK, this answers my earlier question. Then it should be feasible to > > charge this memory. There are still some things to handle. E.g. how do > > we consider this memory during oom victim selection (this is not > > accounted as an anonymous memory in get_mm_counter, right?), maybe others. > > But the primary point is that nobody pins the memory outside of the > > mapping. > > At this point it is accounted as a regular page would be (anonymous, file > or share memory). I wanted mm_counters to reflect memcg but i can untie > that. I am not sure I understand. If the device memory is accounted to the same mm counter as the original page then it is correct. I will try to double check the implementation (hopefully soon). -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
