From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E11E1CA9EAE for ; Tue, 29 Oct 2019 17:35:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B6B1120856 for ; Tue, 29 Oct 2019 17:35:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728387AbfJ2RfS (ORCPT ); Tue, 29 Oct 2019 13:35:18 -0400 Received: from relay.sw.ru ([185.231.240.75]:57874 "EHLO relay.sw.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728024AbfJ2RfS (ORCPT ); Tue, 29 Oct 2019 13:35:18 -0400 Received: from [172.16.25.5] by relay.sw.ru with esmtp (Exim 4.92.2) (envelope-from ) id 1iPVOe-0006jr-U1; Tue, 29 Oct 2019 20:35:09 +0300 Subject: Re: [PATCH v10 5/5] kasan debug: track pages allocated for vmalloc shadow To: Daniel Axtens , kasan-dev@googlegroups.com, linux-mm@kvack.org, x86@kernel.org, glider@google.com, luto@kernel.org, linux-kernel@vger.kernel.org, mark.rutland@arm.com, dvyukov@google.com, christophe.leroy@c-s.fr Cc: linuxppc-dev@lists.ozlabs.org, gor@linux.ibm.com, Andrew Morton References: <20191029042059.28541-1-dja@axtens.net> <20191029042059.28541-6-dja@axtens.net> From: Andrey Ryabinin Message-ID: <79d1efdc-5f11-1c20-9906-0f3cdcd60c20@virtuozzo.com> Date: Tue, 29 Oct 2019 20:34:50 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <20191029042059.28541-6-dja@axtens.net> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/29/19 7:20 AM, Daniel Axtens wrote: > Provide the current number of vmalloc shadow pages in > /sys/kernel/debug/kasan/vmalloc_shadow_pages. > I wouldn't merge this. I don't see use-case for this, besides testing this patch set. And I think that number should be possible to extract via page_owner mechanism.