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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=ham 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 83A45C2BCA1 for ; Sun, 9 Jun 2019 10:08:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 52E3E20693 for ; Sun, 9 Jun 2019 10:08:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=yandex-team.ru header.i=@yandex-team.ru header.b="SA+8YOG3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728108AbfFIKIy (ORCPT ); Sun, 9 Jun 2019 06:08:54 -0400 Received: from forwardcorp1p.mail.yandex.net ([77.88.29.217]:56412 "EHLO forwardcorp1p.mail.yandex.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727853AbfFIKIx (ORCPT ); Sun, 9 Jun 2019 06:08:53 -0400 Received: from mxbackcorp1j.mail.yandex.net (mxbackcorp1j.mail.yandex.net [IPv6:2a02:6b8:0:1619::162]) by forwardcorp1p.mail.yandex.net (Yandex) with ESMTP id 72C702E1466; Sun, 9 Jun 2019 13:08:50 +0300 (MSK) Received: from smtpcorp1p.mail.yandex.net (smtpcorp1p.mail.yandex.net [2a02:6b8:0:1472:2741:0:8b6:10]) by mxbackcorp1j.mail.yandex.net (nwsmtp/Yandex) with ESMTP id 2urtvvwpVi-8nOa9Lfg; Sun, 09 Jun 2019 13:08:50 +0300 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1560074930; bh=A1Nf6U0SvfT2BlL//D1jO+fs0ZHFTGiIegZYeSRr5dQ=; h=Message-ID:Date:To:From:Subject:Cc; b=SA+8YOG3X58lzzkWQxUgsq5XNkRaEMhVLAik6vgAWA+LyhIPHKXPgzRv8MpB3TJ+w F7x2Xwlkvj1bevytfO9ytA3lDrG88xYiiYv6hgsvKmZnnN5adJyE7z06mM4GmclYnh bNGsFLf3hPwpIcii0K+apf2qgVIRyuqYMl5gDgpM= Authentication-Results: mxbackcorp1j.mail.yandex.net; dkim=pass header.i=@yandex-team.ru Received: from dynamic-red.dhcp.yndx.net (dynamic-red.dhcp.yndx.net [2a02:6b8:0:40c:3d25:9e27:4f75:a150]) by smtpcorp1p.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id 4GNAteVf4o-8ngWxpn4; Sun, 09 Jun 2019 13:08:49 +0300 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client certificate not present) Subject: [PATCH v2 0/6] mm: use down_read_killable for locking mmap_sem in proc From: Konstantin Khlebnikov To: linux-mm@kvack.org, Andrew Morton , linux-kernel@vger.kernel.org Cc: Oleg Nesterov , Matthew Wilcox , Michal Hocko , Cyrill Gorcunov , Kirill Tkhai , Michal =?utf-8?q?Koutn=C3=BD?= , Al Viro , Roman Gushchin Date: Sun, 09 Jun 2019 13:08:49 +0300 Message-ID: <156007465229.3335.10259979070641486905.stgit@buzz> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org v1: https://lore.kernel.org/lkml/155790967258.1319.11531787078240675602.stgit@buzz/ v1 "mm: use down_read_killable for locking mmap_sem in access_remote_vm" https://lore.kernel.org/lkml/155790847881.2798.7160461383704600177.stgit@buzz/ changes since v1: * update comments and collect acks/reviews. --- Konstantin Khlebnikov (6): proc: use down_read_killable mmap_sem for /proc/pid/maps proc: use down_read_killable mmap_sem for /proc/pid/smaps_rollup proc: use down_read_killable mmap_sem for /proc/pid/pagemap proc: use down_read_killable mmap_sem for /proc/pid/clear_refs proc: use down_read_killable mmap_sem for /proc/pid/map_files mm: use down_read_killable for locking mmap_sem in access_remote_vm fs/proc/base.c | 27 +++++++++++++++++++++------ fs/proc/task_mmu.c | 23 ++++++++++++++++++----- fs/proc/task_nommu.c | 6 +++++- mm/memory.c | 4 +++- mm/nommu.c | 3 ++- 5 files changed, 49 insertions(+), 14 deletions(-) -- Signature