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=-18.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL autolearn=unavailable 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 33EF1C432BE for ; Fri, 30 Jul 2021 07:22:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1366561040 for ; Fri, 30 Jul 2021 07:22:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237780AbhG3HXC (ORCPT ); Fri, 30 Jul 2021 03:23:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46880 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237572AbhG3HXB (ORCPT ); Fri, 30 Jul 2021 03:23:01 -0400 Received: from mail-qk1-x732.google.com (mail-qk1-x732.google.com [IPv6:2607:f8b0:4864:20::732]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 76B5EC0613C1 for ; Fri, 30 Jul 2021 00:22:57 -0700 (PDT) Received: by mail-qk1-x732.google.com with SMTP id k7so8539711qki.11 for ; Fri, 30 Jul 2021 00:22:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:from:to:cc:subject:message-id:mime-version; bh=W19ulHdbRii8uGULgM4xCYIrYZn/kkVxbVYhZIEWkWk=; b=IWpcSmeCeF6GGdHsOxfv5cO5VtTb2UpZlZv2kMHjrK1vD6llmIA49c41Kip/TzTPQC 8pyBPuaKLUt3CjflHMs0OcSM+lv74B8UjBe+RIJUDmnzvVHB/Bbg4VUAjDXfXjK+BcTp MmJPREd21f/WQPa3PW2F8+95/NsMu7LXr6OSruWBxnRNlia9jC4qRKe3RsVg1R5wuih3 94Y2iPdQjcGv3Xae+Nov4IWLssQ3IhpyOAHDgRmhqziDfcNMB3WJ1I7WzK5+NhU6zq/F 4BrZa229o2W9RrXccNVRCyv1J+u+UhtBoHYbQWfKC0saEpi1N9y2FUBDFT2sA+xQVltK DKug== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version; bh=W19ulHdbRii8uGULgM4xCYIrYZn/kkVxbVYhZIEWkWk=; b=QLxd44dgI9geT7IW3/Atf0BEBJO3IyWSiP+34VIZOOMU6TFUS+w4eveDZDGxzqL+K/ vdKc0EAHZ++P8QXVTBlJXvsO2pjMwMlBWjCRxS9VHiMekyCEcEcsZlJiMR49670j1nCc hdeTKEbKH9euge/3YGYys6gcuFx490paKEJK4j9xfzkJQoHHDGXZAzxHuIREZnPY8lpA OXQXP0JNjNmcizU/eAY+EJeJsKJiBz9Yla6dVodl9M8LEe2SrX38aVVWSZ9GoPzLJU06 9YAZh3wdsoUHAwR911AEscRowQMk2wRodCfk+Kj5KKSAt3SxvH/pmnNiXC7iTSz+FXKb CJOQ== X-Gm-Message-State: AOAM5314f+QwrWJYsEa4lzb88reVBXLnOZCOGE67ciSV6HWslFwqxVBw 4SBEoGbwmx2xF+QLXXqiQgVQiQ== X-Google-Smtp-Source: ABdhPJykA6Jb3yBOp5zc/TcieykN44zj2IVlu/Hldx8zKyLBorE+22RYQHjNgr4D6QAgGwOovh/0Sw== X-Received: by 2002:a05:620a:1227:: with SMTP id v7mr998851qkj.3.1627629776350; Fri, 30 Jul 2021 00:22:56 -0700 (PDT) Received: from ripple.attlocal.net (172-10-233-147.lightspeed.sntcca.sbcglobal.net. [172.10.233.147]) by smtp.gmail.com with ESMTPSA id b204sm490194qkg.76.2021.07.30.00.22.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 30 Jul 2021 00:22:55 -0700 (PDT) Date: Fri, 30 Jul 2021 00:22:41 -0700 (PDT) From: Hugh Dickins X-X-Sender: hugh@ripple.anvils To: Andrew Morton cc: Hugh Dickins , Shakeel Butt , "Kirill A. Shutemov" , Yang Shi , Miaohe Lin , Mike Kravetz , Michal Hocko , Rik van Riel , Christoph Hellwig , Matthew Wilcox , "Eric W. Biederman" , Alexey Gladkov , Chris Wilson , Matthew Auld , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 00/16] tmpfs: HUGEPAGE and MEM_LOCK fcntls and memfds Message-ID: <2862852d-badd-7486-3a8e-c5ea9666d6fb@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org A series of HUGEPAGE and MEM_LOCK tmpfs fcntls and memfd_create flags, after fixes (not essential for stable) and cleanups in related areas. Against 5.14-rc3: currently no conflict with linux-next or mmotm. 01/16 huge tmpfs: fix fallocate(vanilla) advance over huge pages 02/16 huge tmpfs: fix split_huge_page() after FALLOC_FL_KEEP_SIZE 03/16 huge tmpfs: remove shrinklist addition from shmem_setattr() 04/16 huge tmpfs: revert shmem's use of transhuge_vma_enabled() 05/16 huge tmpfs: move shmem_huge_enabled() upwards 06/16 huge tmpfs: shmem_is_huge(vma, inode, index) 07/16 memfd: memfd_create(name, MFD_HUGEPAGE) for shmem huge pages 08/16 huge tmpfs: fcntl(fd, F_HUGEPAGE) and fcntl(fd, F_NOHUGEPAGE) 09/16 huge tmpfs: decide stat.st_blksize by shmem_is_huge() 10/16 tmpfs: fcntl(fd, F_MEM_LOCK) to memlock a tmpfs file 11/16 tmpfs: fcntl(fd, F_MEM_LOCKED) to test if memlocked 12/16 tmpfs: refuse memlock when fallocated beyond i_size 13/16 mm: bool user_shm_lock(loff_t size, struct ucounts *) 14/16 mm: user_shm_lock(,,getuc) and user_shm_unlock(,,putuc) 15/16 tmpfs: permit changing size of memlocked file 16/16 memfd: memfd_create(name, MFD_MEM_LOCK) for memlocked shmem fs/fcntl.c | 8 fs/hugetlbfs/inode.c | 4 include/linux/mm.h | 4 include/linux/shmem_fs.h | 31 ++- include/uapi/linux/fcntl.h | 17 + include/uapi/linux/memfd.h | 4 ipc/shm.c | 4 mm/huge_memory.c | 6 mm/khugepaged.c | 2 mm/memfd.c | 27 ++ mm/mlock.c | 19 - mm/shmem.c | 397 ++++++++++++++++++++++++++------------- 12 files changed, 370 insertions(+), 153 deletions(-) Hugh