diff options
Diffstat (limited to 'mm/memcontrol.c')
| -rw-r--r-- | mm/memcontrol.c | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 609c49f492e6..9f2f64697409 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1071,6 +1071,7 @@ void mem_cgroup_lru_del_list(struct page *page, enum lru_list lru) VM_BUG_ON(!memcg); mz = page_cgroup_zoneinfo(memcg, page); /* huge page split is done under lru_lock. so, we have no races. */ + VM_BUG_ON(MEM_CGROUP_ZSTAT(mz, lru) < (1 << compound_order(page))); MEM_CGROUP_ZSTAT(mz, lru) -= 1 << compound_order(page); } @@ -2465,9 +2466,7 @@ static void __mem_cgroup_commit_charge(struct mem_cgroup *memcg, void mem_cgroup_split_huge_fixup(struct page *head) { struct page_cgroup *head_pc = lookup_page_cgroup(head); - struct mem_cgroup_per_zone *mz; struct page_cgroup *pc; - enum lru_list lru; int i; if (mem_cgroup_disabled()) @@ -2478,15 +2477,8 @@ void mem_cgroup_split_huge_fixup(struct page *head) smp_wmb();/* see __commit_charge() */ pc->flags = head_pc->flags & ~PCGF_NOCOPY_AT_SPLIT; } - /* - * Tail pages will be added to LRU. - * We hold lru_lock,then,reduce counter directly. - */ - lru = page_lru(head); - mz = page_cgroup_zoneinfo(head_pc->mem_cgroup, head); - MEM_CGROUP_ZSTAT(mz, lru) -= HPAGE_PMD_NR - 1; } -#endif +#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ /** * mem_cgroup_move_account - move account of the page |