From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> memroy cgroup's LRU stat should take care of size of pages because Transparent Hugepage inserts hugepage into LRU and zone counter is updeted based on the size of page. If this value is the number wrong, memory reclaim will not work well. Note: only head page of THP's huge page is linked into LRU. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> --- mm/memcontrol.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) Index: mmotm-0107/mm/memcontrol.c =================================================================== --- mmotm-0107.orig/mm/memcontrol.c +++ mmotm-0107/mm/memcontrol.c @@ -815,7 +815,10 @@ void mem_cgroup_del_lru_list(struct page * removed from global LRU. */ mz = page_cgroup_zoneinfo(pc); - MEM_CGROUP_ZSTAT(mz, lru) -= 1; + if (!PageTransHuge(page)) + MEM_CGROUP_ZSTAT(mz, lru) -= 1; + else + MEM_CGROUP_ZSTAT(mz, lru) -= 1 << compound_order(page); if (mem_cgroup_is_root(pc->mem_cgroup)) return; VM_BUG_ON(list_empty(&pc->lru)); @@ -866,7 +869,10 @@ void mem_cgroup_add_lru_list(struct page return; mz = page_cgroup_zoneinfo(pc); - MEM_CGROUP_ZSTAT(mz, lru) += 1; + if (!PageTransHuge(page)) + MEM_CGROUP_ZSTAT(mz, lru) += 1; + else + MEM_CGROUP_ZSTAT(mz, lru) += 1 << compound_order(page); SetPageCgroupAcctLRU(pc); if (mem_cgroup_is_root(pc->mem_cgroup)) return; -- 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>