On Tue, Sep 27, 2016 at 09:54:12AM +0100, Mel Gorman wrote: > On Tue, Sep 27, 2016 at 09:30:55AM +0200, Peter Zijlstra wrote: > Simple is relative unless I drastically overcomplicated things and it > wouldn't be the first time. 64-bit only side-steps the page flag issue > as long as we can live with that. So one problem with the 64bit only pageflags is that they do eat space from page-flags-layout, we do try and fit a bunch of other crap in there, and at some point that all will not fit anymore and we'll revert to worse. I've no idea how far away from that we are for distro kernels. I suppose they have fairly large NR_NODES and NR_CPUS. -- 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>