From: Johannes Weiner <jweiner@xxxxxxxxxx> mem_cgroup_uncharge_page() is only called on either freshly allocated pages without page->mapping or on rmapped PageAnon() pages. There is no need to check for a page->mapping that is not an anon_vma. Signed-off-by: Johannes Weiner <jweiner@xxxxxxxxxx> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Acked-by: Michal Hocko <mhocko@xxxxxxx> --- mm/memcontrol.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index f5aa1b8..468a5a4 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2992,8 +2992,7 @@ void mem_cgroup_uncharge_page(struct page *page) /* early check. */ if (page_mapped(page)) return; - if (page->mapping && !PageAnon(page)) - return; + VM_BUG_ON(page->mapping && !PageAnon(page)); __mem_cgroup_uncharge_common(page, MEM_CGROUP_CHARGE_TYPE_MAPPED); } -- 1.7.6.4 -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
