From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-f71.google.com (mail-oi0-f71.google.com [209.85.218.71]) by kanga.kvack.org (Postfix) with ESMTP id 5764E6B025E for ; Tue, 31 Jan 2017 08:23:52 -0500 (EST) Received: by mail-oi0-f71.google.com with SMTP id u143so399220045oif.1 for ; Tue, 31 Jan 2017 05:23:52 -0800 (PST) Received: from smtpbg128.qq.com (smtpbg128.qq.com. [183.60.2.224]) by mx.google.com with ESMTPS id j110si6829862otc.68.2017.01.31.05.23.50 for (version=TLS1 cipher=AES128-SHA bits=128/128); Tue, 31 Jan 2017 05:23:51 -0800 (PST) From: ysxie@foxmail.com Subject: [PATCH v5 3/4] HWPOISON: soft offlining for non-lru movable page Date: Tue, 31 Jan 2017 21:06:20 +0800 Message-Id: <1485867981-16037-4-git-send-email-ysxie@foxmail.com> In-Reply-To: <1485867981-16037-1-git-send-email-ysxie@foxmail.com> References: <1485867981-16037-1-git-send-email-ysxie@foxmail.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: n-horiguchi@ah.jp.nec.com, mhocko@suse.com, akpm@linux-foundation.org, minchan@kernel.org, vbabka@suse.cz, mgorman@techsingularity.net, hannes@cmpxchg.org, iamjoonsoo.kim@lge.com, izumi.taku@jp.fujitsu.com, arbab@linux.vnet.ibm.com, vkuznets@redhat.com, ak@linux.intel.com, guohanjun@huawei.com, qiuxishi@huawei.com From: Yisheng Xie This patch is to extends soft offlining framework to support non-lru page, which already support migration after commit bda807d44454 ("mm: migrate: support non-lru movable page migration") When memory corrected errors occur on a non-lru movable page, we can choose to stop using it by migrating data onto another page and disable the original (maybe half-broken) one. Signed-off-by: Yisheng Xie Suggested-by: Michal Hocko Suggested-by: Minchan Kim Reviewed-by: Minchan Kim Acked-by: Naoya Horiguchi CC: Vlastimil Babka --- mm/memory-failure.c | 26 ++++++++++++++++---------- 1 file changed, 16 insertions(+), 10 deletions(-) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index f283c7e..3d0f2fd 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1527,7 +1527,8 @@ static int get_any_page(struct page *page, unsigned long pfn, int flags) { int ret = __get_any_page(page, pfn, flags); - if (ret == 1 && !PageHuge(page) && !PageLRU(page)) { + if (ret == 1 && !PageHuge(page) && + !PageLRU(page) && !__PageMovable(page)) { /* * Try to free it. */ @@ -1649,7 +1650,10 @@ static int __soft_offline_page(struct page *page, int flags) * Try to migrate to a new page instead. migrate.c * handles a large number of cases for us. */ - ret = isolate_lru_page(page); + if (PageLRU(page)) + ret = isolate_lru_page(page); + else + ret = isolate_movable_page(page, ISOLATE_UNEVICTABLE); /* * Drop page reference which is came from get_any_page() * successful isolate_lru_page() already took another one. @@ -1657,18 +1661,20 @@ static int __soft_offline_page(struct page *page, int flags) put_hwpoison_page(page); if (!ret) { LIST_HEAD(pagelist); - inc_node_page_state(page, NR_ISOLATED_ANON + - page_is_file_cache(page)); + /* + * After isolated lru page, the PageLRU will be cleared, + * so use !__PageMovable instead for LRU page's mapping + * cannot have PAGE_MAPPING_MOVABLE. + */ + if (!__PageMovable(page)) + inc_node_page_state(page, NR_ISOLATED_ANON + + page_is_file_cache(page)); list_add(&page->lru, &pagelist); ret = migrate_pages(&pagelist, new_page, NULL, MPOL_MF_MOVE_ALL, MIGRATE_SYNC, MR_MEMORY_FAILURE); if (ret) { - if (!list_empty(&pagelist)) { - list_del(&page->lru); - dec_node_page_state(page, NR_ISOLATED_ANON + - page_is_file_cache(page)); - putback_lru_page(page); - } + if (!list_empty(&pagelist)) + putback_movable_pages(&pagelist); pr_info("soft offline: %#lx: migration failed %d, type %lx\n", pfn, ret, page->flags); -- 1.9.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org