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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,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 81344C432BE for ; Tue, 17 Aug 2021 02:22:37 +0000 (UTC) Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 49D8D60F46 for ; Tue, 17 Aug 2021 02:22:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 49D8D60F46 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 2C64A404A9; Tue, 17 Aug 2021 02:22:37 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id FmDD6oRFChlM; Tue, 17 Aug 2021 02:22:33 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp4.osuosl.org (Postfix) with ESMTPS id 05F5F404B0; Tue, 17 Aug 2021 02:22:31 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id C8355C0010; Tue, 17 Aug 2021 02:22:31 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [IPv6:2605:bc80:3010::136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 026B4C000E for ; Tue, 17 Aug 2021 02:22:30 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id AFEB76080C for ; Tue, 17 Aug 2021 02:22:28 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id MlOzUsW4DPBF for ; Tue, 17 Aug 2021 02:22:27 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from out30-42.freemail.mail.aliyun.com (out30-42.freemail.mail.aliyun.com [115.124.30.42]) by smtp3.osuosl.org (Postfix) with ESMTPS id 3B478607DC for ; Tue, 17 Aug 2021 02:22:26 +0000 (UTC) X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R681e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=e01e04420; MF=jefflexu@linux.alibaba.com; NM=1; PH=DS; RN=8; SR=0; TI=SMTPD_---0UjHTKZU_1629166943; Received: from localhost(mailfrom:jefflexu@linux.alibaba.com fp:SMTPD_---0UjHTKZU_1629166943) by smtp.aliyun-inc.com(127.0.0.1); Tue, 17 Aug 2021 10:22:24 +0800 From: Jeffle Xu To: vgoyal@redhat.com, stefanha@redhat.com, miklos@szeredi.hu Subject: [PATCH v4 7/8] fuse: support changing per-file DAX flag inside guest Date: Tue, 17 Aug 2021 10:22:19 +0800 Message-Id: <20210817022220.17574-8-jefflexu@linux.alibaba.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210817022220.17574-1-jefflexu@linux.alibaba.com> References: <20210817022220.17574-1-jefflexu@linux.alibaba.com> MIME-Version: 1.0 Cc: linux-fsdevel@vger.kernel.org, virtio-fs@redhat.com, bo.liu@linux.alibaba.com, joseph.qi@linux.alibaba.com, virtualization@lists.linux-foundation.org X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" Fuse client can enable or disable per-file DAX inside kernel/guest by chattr(1). Similarly the new state won't be updated until the file is closed and reopened later. Signed-off-by: Jeffle Xu --- fs/fuse/ioctl.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/fs/fuse/ioctl.c b/fs/fuse/ioctl.c index 546ea3d58fb4..a9ed53c5dbd1 100644 --- a/fs/fuse/ioctl.c +++ b/fs/fuse/ioctl.c @@ -469,8 +469,6 @@ int fuse_fileattr_set(struct user_namespace *mnt_userns, if (fa->flags_valid) { err = fuse_priv_ioctl(inode, ff, FS_IOC_SETFLAGS, &flags, sizeof(flags)); - if (err) - goto cleanup; } else { memset(&xfa, 0, sizeof(xfa)); xfa.fsx_xflags = fa->fsx_xflags; @@ -483,6 +481,19 @@ int fuse_fileattr_set(struct user_namespace *mnt_userns, &xfa, sizeof(xfa)); } + if (err) + goto cleanup; + + if (IS_ENABLED(CONFIG_FUSE_DAX)) { + bool newdax; + + if (fa->flags_valid) + newdax = flags & FS_DAX_FL; + else + newdax = fa->fsx_xflags & FS_XFLAG_DAX; + fuse_dax_dontcache(inode, newdax); + } + cleanup: fuse_priv_ioctl_cleanup(inode, ff); -- 2.27.0 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization