On recent -mm, when I run make -j 8 under 200M limit of memcg, as == # mount -t cgroup none /cgroup/memory -o memory # mkdir /cgroup/memory/A # echo 200M > /cgroup/memory/A/memory.limit_in_bytes # echo $$ > /cgroup/memory/A/tasks # make -j 8 kernel == I see hangs with khugepaged. That's because memcg's memory reclaim routine doesn't handle HUGE_PAGE request in proper way. And khugepaged doesn't know about memcg. This patch set is for fixing above hang. Patch 1-3 seems obvious and has the same concept as patches in RHEL. Patch 4 may need discussion. I think this version is much simpler because I dropped almost all cosmetics. Please review. This patch is onto mmotm-0125. Thanks, -Kame -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>