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=-6.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 CEBE1C8302B for ; Tue, 13 Oct 2020 02:42:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8676E20674 for ; Tue, 13 Oct 2020 02:42:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=arista.com header.i=@arista.com header.b="KdByimee" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728215AbgJMBeV (ORCPT ); Mon, 12 Oct 2020 21:34:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57354 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728200AbgJMBeU (ORCPT ); Mon, 12 Oct 2020 21:34:20 -0400 Received: from mail-wr1-x442.google.com (mail-wr1-x442.google.com [IPv6:2a00:1450:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 840C1C0613D1 for ; Mon, 12 Oct 2020 18:34:20 -0700 (PDT) Received: by mail-wr1-x442.google.com with SMTP id s9so9736424wro.8 for ; Mon, 12 Oct 2020 18:34:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=arista.com; s=googlenew; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=m0fVYo23z5sDnIdO7CmhPP5/mdbbm0UqpjwBNjbmzHo=; b=KdByimeexhgK1iSMzLpxP57NJAb2JWybo82tdWaJCPrSR7jPuYXzi7z6AI04ExzEDF rns0T5/jh1vW9+BXPef9x3z9htEdn/PF5Z7GFYPlz549XuaDu8sz7EK1eqPynqoTEMlT v9uozVeynaN7X7iAGyN1HO2j6/3NfcDmew2EU6yiRPSZDRG6mO/CPAWUN45x5PBNiqy3 0MirEi4xSdE7tG1kqjYNTiqVfEnwYmGNEoTLyOvJZST9etlU2L2kE1ZYKtLEvCDJhA46 9axx2nBVhBGLTW2YrUl7rO628XbQLNS5Y96xHh/B7ifPka+9/LJfE0iiuP9shnRstOda sl7g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=m0fVYo23z5sDnIdO7CmhPP5/mdbbm0UqpjwBNjbmzHo=; b=j8ktKMnOCGicx/4iJ26vnvt8k6qkv7a1j7VxD7OHi2gHj0kg5z2KejmR8eelDs7hOb GWyv4g+foPj1u9qRZbcHd+p4otpCrYucDHgjlQbTIzPmB31D1QBXega23ftgwbjGI7j4 XOeygciB7uHzqWibGHw95LsGbPu5sDk4FD6cGdcu5xsGMXHQQofatbfelRCNxPusszEG /NAk+Goabnm0Z4JJroxP7hTL3ouAHfkqg+n0H1BgZ1hj13z6PIXFfLkNcR3e4zwp6+y4 TBkInaA4yUlT3/OQ7cNmCvRlEsYUpj9UnMceGn4vY/H+xlJUbQHrLvSmeoK4Z2mp1zci d4cA== X-Gm-Message-State: AOAM532cbmdAIBl7y0ejO1uqW8fC9nPCSJPm6UtVir7yAtkup4THErEU SrrFbsg24DH4c25v6aRKLkw6PEJMGEvw0JDU X-Google-Smtp-Source: ABdhPJylxMFP/0l6plAG1lC4wZxbS5FXIxuQm/csHMG5nqpO55kqKEuOOVOpMKsiWO9QwuFzHnQgrQ== X-Received: by 2002:adf:fd82:: with SMTP id d2mr33017560wrr.304.1602552858954; Mon, 12 Oct 2020 18:34:18 -0700 (PDT) Received: from localhost.localdomain ([2a02:8084:e84:2480:228:f8ff:fe6f:83a8]) by smtp.gmail.com with ESMTPSA id d23sm24825325wmb.6.2020.10.12.18.34.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 Oct 2020 18:34:18 -0700 (PDT) From: Dmitry Safonov To: linux-kernel@vger.kernel.org Cc: Dmitry Safonov <0x7f454c46@gmail.com>, Dmitry Safonov , Alexander Viro , Andrew Morton , Andy Lutomirski , Brian Geffon , Catalin Marinas , Dan Williams , Dave Jiang , Hugh Dickins , Ingo Molnar , "Kirill A. Shutemov" , Mike Kravetz , Minchan Kim , Russell King , Thomas Bogendoerfer , Thomas Gleixner , Vishal Verma , Vlastimil Babka , Will Deacon , linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 0/6] mremap: move_vma() fixes Date: Tue, 13 Oct 2020 02:34:10 +0100 Message-Id: <20201013013416.390574-1-dima@arista.com> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 1 - seems to be historical issue on a rarely taken path 2,3 - fixes related to the new mremap() flag 5 - dax device/hugetlbfs possible issue 4,6 - refactoring As those seems to be actual issues, sending this during the merge-window. (Changes to architecture code are in the 6 patch, but Cc'ing maintainers on cover for the context, I hope it's fine). Cc: Alexander Viro Cc: Andrew Morton Cc: Andy Lutomirski Cc: Brian Geffon Cc: Catalin Marinas Cc: Dan Williams Cc: Dave Jiang Cc: Hugh Dickins Cc: Ingo Molnar Cc: Kirill A. Shutemov Cc: Mike Kravetz Cc: Minchan Kim Cc: Russell King Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Cc: Vishal Verma Cc: Vlastimil Babka Cc: Will Deacon Cc: linux-aio@kvack.org Cc: linux-fsdevel@vger.kernel.org Cc: linux-mm@kvack.org Dmitry Safonov (6): mm/mremap: Account memory on do_munmap() failure mm/mremap: For MREMAP_DONTUNMAP check security_vm_enough_memory_mm() mremap: Don't allow MREMAP_DONTUNMAP on special_mappings and aio vm_ops: Rename .split() callback to .may_split() mremap: Check if it's possible to split original vma mm: Forbid splitting special mappings arch/arm/kernel/vdso.c | 9 ---- arch/arm64/kernel/vdso.c | 41 ++----------------- arch/mips/vdso/genvdso.c | 4 -- arch/s390/kernel/vdso.c | 11 +---- arch/x86/entry/vdso/vma.c | 17 -------- arch/x86/kernel/cpu/resctrl/pseudo_lock.c | 2 +- drivers/dax/device.c | 4 +- fs/aio.c | 5 ++- include/linux/mm.h | 5 ++- ipc/shm.c | 8 ++-- mm/hugetlb.c | 2 +- mm/mmap.c | 22 ++++++++-- mm/mremap.c | 50 +++++++++++------------ 13 files changed, 63 insertions(+), 117 deletions(-) base-commit: bbf5c979011a099af5dc76498918ed7df445635b -- 2.28.0