From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755839Ab2GKDw0 (ORCPT ); Tue, 10 Jul 2012 23:52:26 -0400 Received: from mail-pb0-f46.google.com ([209.85.160.46]:34570 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753301Ab2GKDwY (ORCPT ); Tue, 10 Jul 2012 23:52:24 -0400 From: Wanpeng Li To: linux-mm@kvack.org Cc: Andrew Morton , Li Zefan , Tejun Heo , "Aneesh Kumar K.V" , cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, Wanpeng Li Subject: [PATCH] mm/hugetlb_cgroup: Add list_del to remove unused page from hugepage_activelist when hugepage migration Date: Wed, 11 Jul 2012 11:51:58 +0800 Message-Id: <1341978718-6423-1-git-send-email-liwp.linux@gmail.com> X-Mailer: git-send-email 1.7.5.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Wanpeng Li hugepage_activelist is used to track currently used HugeTLB pages. We can find the in-use HugeTLB pages to support HugeTLB cgroup removal. Don't keep unused page in hugetlb_activelist too long. Otherwise, on cgroup removal we should update the unused page's charge to parent count. To reduce this overhead, remove unused page from hugepage_activelist immediately. Signed-off-by: Wanpeng Li --- mm/hugetlb_cgroup.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/mm/hugetlb_cgroup.c b/mm/hugetlb_cgroup.c index b834e8d..d819d66 100644 --- a/mm/hugetlb_cgroup.c +++ b/mm/hugetlb_cgroup.c @@ -398,6 +398,7 @@ void hugetlb_cgroup_migrate(struct page *oldhpage, struct page *newhpage) spin_lock(&hugetlb_lock); h_cg = hugetlb_cgroup_from_page(oldhpage); set_hugetlb_cgroup(oldhpage, NULL); + list_del(&oldhpage->lru); /* move the h_cg details to new cgroup */ set_hugetlb_cgroup(newhpage, h_cg); -- 1.7.5.4