From patchwork Thu Sep 8 17:24:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 12970389 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 31585C54EE9 for ; Thu, 8 Sep 2022 17:25:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232019AbiIHRZY (ORCPT ); Thu, 8 Sep 2022 13:25:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56312 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231869AbiIHRZM (ORCPT ); Thu, 8 Sep 2022 13:25:12 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 04EF927FE6; Thu, 8 Sep 2022 10:25:09 -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 9635B61DC6; Thu, 8 Sep 2022 17:25:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 04C01C433D6; Thu, 8 Sep 2022 17:25:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1662657908; bh=1d8SlxiMee3v30kC+qO7G0LMkoymE6ghnC1k8q+hGZY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eFMQp/LTTlCkDlKn92/X3tfHWOHHfgkDXgI9vgEevBM+ryfq0bKMd5IMFdYVEMtwF lxBsO0vEg4FONnL1EgdARB3RgAY/FxboaNFZSa/w8GPguBAdb+Cna3jUv0PfCR5BXH gZzf3hrJoAwmsuKcHjHFD8VMyVWKUbRyJg7/DhT4wJT10i7Nm3/bKDznP5BbbQb4ju ovKASAgfb4fhpKWB6Y+ysHICiwz0dumpzMsoIodw4dgt3WyxgeBi9forfqP7lGw5Xf k8ZMRZhv1OxfWXwfy7DZVgsMjKEM/Pg/Bln7i8esqC0sghpOz7OMsFV10EDAr3UMhY y6HTT7AU8JLlg== 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 v5 7/8] nfsd: use the getattr operation to fetch i_version Date: Thu, 8 Sep 2022 13:24:47 -0400 Message-Id: <20220908172448.208585-8-jlayton@kernel.org> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220908172448.208585-1-jlayton@kernel.org> References: <20220908172448.208585-1-jlayton@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Now that we can call into vfs_getattr to get the i_version field, use that facility to fetch it instead of doing it in nfsd4_change_attribute. Set the STATX_INO_VERSION (and BTIME) bits in the request when we're dealing with a v4 request. Then, instead of looking at IS_I_VERSION when generating the change attr, look at the result mask and only use it if STATX_INO_VERSION is set. With this change, we can drop the fetch_iversion export operation as well. Signed-off-by: Jeff Layton --- fs/nfs/export.c | 7 ------- fs/nfsd/nfs4xdr.c | 4 +++- fs/nfsd/nfsfh.c | 6 ++++++ fs/nfsd/nfsfh.h | 9 ++++----- fs/nfsd/vfs.h | 7 ++++++- include/linux/exportfs.h | 1 - 6 files changed, 19 insertions(+), 15 deletions(-) diff --git a/fs/nfs/export.c b/fs/nfs/export.c index 01596f2d0a1e..1a9d5aa51dfb 100644 --- a/fs/nfs/export.c +++ b/fs/nfs/export.c @@ -145,17 +145,10 @@ nfs_get_parent(struct dentry *dentry) return parent; } -static u64 nfs_fetch_iversion(struct inode *inode) -{ - nfs_revalidate_inode(inode, NFS_INO_INVALID_CHANGE); - return inode_peek_iversion_raw(inode); -} - const struct export_operations nfs_export_ops = { .encode_fh = nfs_encode_fh, .fh_to_dentry = nfs_fh_to_dentry, .get_parent = nfs_get_parent, - .fetch_iversion = nfs_fetch_iversion, .flags = EXPORT_OP_NOWCC|EXPORT_OP_NOSUBTREECHK| EXPORT_OP_CLOSE_BEFORE_UNLINK|EXPORT_OP_REMOTE_FS| EXPORT_OP_NOATOMIC_ATTR, diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 5980df859c3a..4eec2ce05e7e 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -2872,7 +2872,9 @@ nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, goto out; } - err = vfs_getattr(&path, &stat, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT); + err = vfs_getattr(&path, &stat, + STATX_BASIC_STATS | STATX_BTIME | STATX_INO_VERSION, + AT_STATX_SYNC_AS_STAT); if (err) goto out_nfserr; if (!(stat.result_mask & STATX_BTIME)) diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c index a5b71526cee0..798f5d8d2055 100644 --- a/fs/nfsd/nfsfh.c +++ b/fs/nfsd/nfsfh.c @@ -634,6 +634,10 @@ void fh_fill_pre_attrs(struct svc_fh *fhp) stat.mtime = inode->i_mtime; stat.ctime = inode->i_ctime; stat.size = inode->i_size; + if (v4 && IS_I_VERSION(inode)) { + stat.ino_version = inode_query_iversion(inode); + stat.result_mask |= STATX_INO_VERSION; + } } if (v4) fhp->fh_pre_change = nfsd4_change_attribute(&stat, inode); @@ -665,6 +669,8 @@ void fh_fill_post_attrs(struct svc_fh *fhp) if (err) { fhp->fh_post_saved = false; fhp->fh_post_attr.ctime = inode->i_ctime; + if (v4 && IS_I_VERSION(inode)) + fhp->fh_post_attr.ino_version = inode_query_iversion(inode); } else fhp->fh_post_saved = true; if (v4) diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h index c3ae6414fc5c..3786b181d5ce 100644 --- a/fs/nfsd/nfsfh.h +++ b/fs/nfsd/nfsfh.h @@ -305,18 +305,17 @@ static inline void fh_clear_pre_post_attrs(struct svc_fh *fhp) static inline u64 nfsd4_change_attribute(struct kstat *stat, struct inode *inode) { - if (inode->i_sb->s_export_op->fetch_iversion) - return inode->i_sb->s_export_op->fetch_iversion(inode); - else if (IS_I_VERSION(inode)) { + if (stat->result_mask & STATX_INO_VERSION) { u64 chattr; chattr = stat->ctime.tv_sec; chattr <<= 30; chattr += stat->ctime.tv_nsec; - chattr += inode_query_iversion(inode); + chattr += stat->ino_version; return chattr; - } else + } else { return time_to_chattr(&stat->ctime); + } } extern void fh_fill_pre_attrs(struct svc_fh *fhp); diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h index c95cd414b4bb..8a3a5dbde5fa 100644 --- a/fs/nfsd/vfs.h +++ b/fs/nfsd/vfs.h @@ -168,9 +168,14 @@ static inline void fh_drop_write(struct svc_fh *fh) static inline __be32 fh_getattr(const struct svc_fh *fh, struct kstat *stat) { + u32 request_mask = STATX_BASIC_STATS; struct path p = {.mnt = fh->fh_export->ex_path.mnt, .dentry = fh->fh_dentry}; - return nfserrno(vfs_getattr(&p, stat, STATX_BASIC_STATS, + + if (fh->fh_maxsize == NFS4_FHSIZE) + request_mask |= (STATX_BTIME | STATX_INO_VERSION); + + return nfserrno(vfs_getattr(&p, stat, request_mask, AT_STATX_SYNC_AS_STAT)); } diff --git a/include/linux/exportfs.h b/include/linux/exportfs.h index fe848901fcc3..9f4d4bcbf251 100644 --- a/include/linux/exportfs.h +++ b/include/linux/exportfs.h @@ -213,7 +213,6 @@ struct export_operations { bool write, u32 *device_generation); int (*commit_blocks)(struct inode *inode, struct iomap *iomaps, int nr_iomaps, struct iattr *iattr); - u64 (*fetch_iversion)(struct inode *); #define EXPORT_OP_NOWCC (0x1) /* don't collect v3 wcc data */ #define EXPORT_OP_NOSUBTREECHK (0x2) /* no subtree checking */ #define EXPORT_OP_CLOSE_BEFORE_UNLINK (0x4) /* close files before unlink */