From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f71.google.com (mail-pa0-f71.google.com [209.85.220.71]) by kanga.kvack.org (Postfix) with ESMTP id BC6D76B025F for ; Tue, 3 May 2016 01:23:15 -0400 (EDT) Received: by mail-pa0-f71.google.com with SMTP id zy2so15028302pac.1 for ; Mon, 02 May 2016 22:23:15 -0700 (PDT) Received: from mail-pa0-x22e.google.com (mail-pa0-x22e.google.com. [2607:f8b0:400e:c03::22e]) by mx.google.com with ESMTPS id 20si2321171pfp.114.2016.05.02.22.23.14 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 02 May 2016 22:23:15 -0700 (PDT) Received: by mail-pa0-x22e.google.com with SMTP id xk12so4965273pac.0 for ; Mon, 02 May 2016 22:23:14 -0700 (PDT) From: js1304@gmail.com Subject: [PATCH 3/6] mm/page_owner: copy last_migrate_reason in copy_page_owner() Date: Tue, 3 May 2016 14:23:01 +0900 Message-Id: <1462252984-8524-4-git-send-email-iamjoonsoo.kim@lge.com> In-Reply-To: <1462252984-8524-1-git-send-email-iamjoonsoo.kim@lge.com> References: <1462252984-8524-1-git-send-email-iamjoonsoo.kim@lge.com> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Vlastimil Babka , mgorman@techsingularity.net, Minchan Kim , Alexander Potapenko , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Joonsoo Kim From: Joonsoo Kim Currently, copy_page_owner() doesn't copy all the owner information. It skips last_migrate_reason because copy_page_owner() is used for migration and it will be properly set soon. But, following patch will use copy_page_owner() and this skip will cause the problem that allocated page has uninitialied last_migrate_reason. To prevent it, this patch also copy last_migrate_reason in copy_page_owner(). Signed-off-by: Joonsoo Kim --- mm/page_owner.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/page_owner.c b/mm/page_owner.c index 792b56d..6693959 100644 --- a/mm/page_owner.c +++ b/mm/page_owner.c @@ -101,6 +101,7 @@ void __copy_page_owner(struct page *oldpage, struct page *newpage) new_ext->order = old_ext->order; new_ext->gfp_mask = old_ext->gfp_mask; + new_ext->last_migrate_reason = old_ext->last_migrate_reason; new_ext->nr_entries = old_ext->nr_entries; for (i = 0; i < ARRAY_SIZE(new_ext->trace_entries); i++) -- 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