From patchwork Fri Sep 30 11:18:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 611002 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5C1C6C4332F for ; Fri, 30 Sep 2022 11:27:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230110AbiI3L1M (ORCPT ); Fri, 30 Sep 2022 07:27:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52256 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232575AbiI3L03 (ORCPT ); Fri, 30 Sep 2022 07:26:29 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 30A063ECC4; Fri, 30 Sep 2022 04:18:54 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id BD7C662299; Fri, 30 Sep 2022 11:18:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 45083C4347C; Fri, 30 Sep 2022 11:18:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1664536733; bh=RJmSmkbr0DPIG61xWI+MMXJapiGj8COfeLHhDCBUg/g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qSgdTK0OkVqwuPneLv8OETMMx+MgJGaIW8o8j/RrOd+1X4XklGgsgv+VO7ZCVpFzS m39M+7b3tW7h2s/S1s1HQslRMr/yZbSzTHLj4bItFJi16KX5RHuh4F7+MBpFNh3Om9 Be0JAf/us9KqWqmXjTtzI94l1o8fO+7YhUw9cHpm5/b1MdORIGcnuSWKIQKjmCwJSK CfkAOG9TrJ69UPkDSqjsb/UgFQTgW8XIEkD8Y5B5O8mbZbvchl7Z1eEbhsuzbYaxxD J2buF3KHDJbsuYGrh4rsD/11byM8hFPgLA5oWkhWWdeQV5sv0F6yf2k+TcqUPIQUJ+ g40PWwUX4LrpQ== From: Jeff Layton To: tytso@mit.edu, adilger.kernel@dilger.ca, djwong@kernel.org, david@fromorbit.com, trondmy@hammerspace.com, neilb@suse.de, viro@zeniv.linux.org.uk, zohar@linux.ibm.com, xiubli@redhat.com, chuck.lever@oracle.com, lczerner@redhat.com, jack@suse.cz, bfields@fieldses.org, brauner@kernel.org, fweimer@redhat.com Cc: linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, ceph-devel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-nfs@vger.kernel.org, linux-xfs@vger.kernel.org Subject: [PATCH v6 4/9] nfs: report the inode version in getattr if requested Date: Fri, 30 Sep 2022 07:18:35 -0400 Message-Id: <20220930111840.10695-5-jlayton@kernel.org> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220930111840.10695-1-jlayton@kernel.org> References: <20220930111840.10695-1-jlayton@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org Allow NFS to report the i_version in getattr requests. Since the cost to fetch it is relatively cheap, do it unconditionally and just set the flag if it looks like it's valid. Also, conditionally enable the MONOTONIC flag when the server reports its change attr type as such. Signed-off-by: Jeff Layton Reviewed-by: NeilBrown --- fs/nfs/inode.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index bea7c005119c..5cb7017e5089 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -830,6 +830,8 @@ static u32 nfs_get_valid_attrmask(struct inode *inode) reply_mask |= STATX_UID | STATX_GID; if (!(cache_validity & NFS_INO_INVALID_BLOCKS)) reply_mask |= STATX_BLOCKS; + if (!(cache_validity & NFS_INO_INVALID_CHANGE)) + reply_mask |= STATX_VERSION; return reply_mask; } @@ -848,7 +850,7 @@ int nfs_getattr(struct user_namespace *mnt_userns, const struct path *path, request_mask &= STATX_TYPE | STATX_MODE | STATX_NLINK | STATX_UID | STATX_GID | STATX_ATIME | STATX_MTIME | STATX_CTIME | - STATX_INO | STATX_SIZE | STATX_BLOCKS; + STATX_INO | STATX_SIZE | STATX_BLOCKS | STATX_VERSION; if ((query_flags & AT_STATX_DONT_SYNC) && !force_sync) { if (readdirplus_enabled) @@ -877,7 +879,7 @@ int nfs_getattr(struct user_namespace *mnt_userns, const struct path *path, /* Is the user requesting attributes that might need revalidation? */ if (!(request_mask & (STATX_MODE|STATX_NLINK|STATX_ATIME|STATX_CTIME| STATX_MTIME|STATX_UID|STATX_GID| - STATX_SIZE|STATX_BLOCKS))) + STATX_SIZE|STATX_BLOCKS|STATX_VERSION))) goto out_no_revalidate; /* Check whether the cached attributes are stale */ @@ -915,6 +917,10 @@ int nfs_getattr(struct user_namespace *mnt_userns, const struct path *path, generic_fillattr(&init_user_ns, inode, stat); stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode)); + stat->version = inode_peek_iversion_raw(inode); + stat->attributes_mask |= STATX_ATTR_VERSION_MONOTONIC; + if (server->change_attr_type != NFS4_CHANGE_TYPE_IS_UNDEFINED) + stat->attributes |= STATX_ATTR_VERSION_MONOTONIC; if (S_ISDIR(inode->i_mode)) stat->blksize = NFS_SERVER(inode)->dtsize; out: