From patchwork Thu Jul 15 09:30:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jingbo Xu X-Patchwork-Id: 12379647 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,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 7956BC07E96 for ; Thu, 15 Jul 2021 09:30:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 53DC5613B5 for ; Thu, 15 Jul 2021 09:30:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234018AbhGOJd0 (ORCPT ); Thu, 15 Jul 2021 05:33:26 -0400 Received: from out30-56.freemail.mail.aliyun.com ([115.124.30.56]:60680 "EHLO out30-56.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231395AbhGOJdZ (ORCPT ); Thu, 15 Jul 2021 05:33:25 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R331e4;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=6;SR=0;TI=SMTPD_---0UfrwCzP_1626341431; Received: from localhost(mailfrom:jefflexu@linux.alibaba.com fp:SMTPD_---0UfrwCzP_1626341431) by smtp.aliyun-inc.com(127.0.0.1); Thu, 15 Jul 2021 17:30:31 +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, bo.liu@linux.alibaba.com Subject: [RFC PATCH 0/3] virtiofs,fuse: support per-file DAX Date: Thu, 15 Jul 2021 17:30:28 +0800 Message-Id: <20210715093031.55667-1-jefflexu@linux.alibaba.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 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]. Currently virtiofs (in guest kernel) accepts per-file DAX flag from FUSE server (in host). Currently it is not implemented yet to change per-file DAX flag inside guest kernel, e.g., by chattr(1). 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") Jeffle Xu (3): fuse: add fuse_should_enable_dax() helper fuse: Make DAX mount option a tri-state fuse: add per-file DAX flag fs/fuse/dax.c | 43 +++++++++++++++++++++++++++++++++++++-- fs/fuse/file.c | 4 ++-- fs/fuse/fuse_i.h | 16 +++++++++++---- fs/fuse/inode.c | 6 ++++-- fs/fuse/virtio_fs.c | 16 +++++++++++++-- include/uapi/linux/fuse.h | 5 +++++ 6 files changed, 78 insertions(+), 12 deletions(-)