On Fri, Jan 11, 2013 at 02:56:15PM +0900, Minchan Kim wrote: [...] > > Ahh. You're talking about the shrinker interface. Yes, there is no way to > > tell if the freed memory will be actually "released" (and if not, then > > yes, we released it unnecessary). > > I don't tell about actually "released" or not. > I assume application actually release pages but the pages would be another > zones, NOT targetted zone from kernel. In case of that, kernel could ask > continuously until target zone has enough free memory. [...] > > isolate task to only some nodes/zones, if we really care about precise > > accounting?). But I'm surely open for ideas. :) > > My dumb idea is only notify to user when reclaim is triggered by > __GFP_HIGHMEM|__GFP_MOVABLE which is most gfp_t for application memory. :) Ah, I see. Sure, that will help a lot. I'll try to incorporate this into the next iteration. But there are still unresolved accounting issues that I outlined, and I don't think that they are this easy to solve. :) Thanks! Anton -- 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>