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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT 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 697DDC432BE for ; Tue, 17 Aug 2021 02:22:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4468C60F46 for ; Tue, 17 Aug 2021 02:22:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236315AbhHQCW4 (ORCPT ); Mon, 16 Aug 2021 22:22:56 -0400 Received: from out30-54.freemail.mail.aliyun.com ([115.124.30.54]:33600 "EHLO out30-54.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233528AbhHQCWy (ORCPT ); Mon, 16 Aug 2021 22:22:54 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R981e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e01424;MF=jefflexu@linux.alibaba.com;NM=1;PH=DS;RN=8;SR=0;TI=SMTPD_---0UjH7KAY_1629166940; Received: from localhost(mailfrom:jefflexu@linux.alibaba.com fp:SMTPD_---0UjH7KAY_1629166940) by smtp.aliyun-inc.com(127.0.0.1); Tue, 17 Aug 2021 10:22:21 +0800 From: Jeffle Xu To: vgoyal@redhat.com, stefanha@redhat.com, miklos@szeredi.hu Cc: linux-fsdevel@vger.kernel.org, virtualization@lists.linux-foundation.org, virtio-fs@redhat.com, joseph.qi@linux.alibaba.com, bo.liu@linux.alibaba.com Subject: [PATCH v4 0/8] fuse,virtiofs: support per-file DAX Date: Tue, 17 Aug 2021 10:22:12 +0800 Message-Id: <20210817022220.17574-1-jefflexu@linux.alibaba.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org This patchset adds support of per-file DAX for virtiofs, which is inspired by Ira Weiny's work on ext4[1] and xfs[2]. Any comment is welcome. [1] commit 9cb20f94afcd ("fs/ext4: Make DAX mount option a tri-state") [2] commit 02beb2686ff9 ("fs/xfs: Make DAX mount option a tri-state") changes since v3: - bug fix (patch 6): s/"IS_DAX(inode) != newdax"/"!!IS_DAX(inode) != newdax" - during FUSE_INIT, advertise capability for per-file DAX only when mounted as "-o dax=inode" (patch 4) changes since v2: - modify fuse_show_options() accordingly to make it compatible with new tri-state mount option (patch 2) - extract FUSE protocol changes into one seperate patch (patch 3) - FUSE server/client need to negotiate if they support per-file DAX (patch 4) - extract DONT_CACHE logic into patch 6/7 v3: https://www.spinics.net/lists/linux-fsdevel/msg200852.html v2: https://www.spinics.net/lists/linux-fsdevel/msg199584.html v1: https://www.spinics.net/lists/linux-virtualization/msg51008.html Jeffle Xu (8): fuse: add fuse_should_enable_dax() helper fuse: Make DAX mount option a tri-state fuse: support per-file DAX fuse: negotiate if server/client supports per-file DAX fuse: enable per-file DAX fuse: mark inode DONT_CACHE when per-file DAX indication changes fuse: support changing per-file DAX flag inside guest fuse: show '-o dax=inode' option only when FUSE server supports fs/fuse/dax.c | 32 +++++++++++++++++++++++++++++--- fs/fuse/file.c | 4 ++-- fs/fuse/fuse_i.h | 22 ++++++++++++++++++---- fs/fuse/inode.c | 27 +++++++++++++++++++-------- fs/fuse/ioctl.c | 15 +++++++++++++-- fs/fuse/virtio_fs.c | 16 ++++++++++++++-- include/uapi/linux/fuse.h | 9 ++++++++- 7 files changed, 103 insertions(+), 22 deletions(-) -- 2.27.0