linux-kernel - Re: [PATCH v7 8/9] nfsd: remove fetch

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Date:   Thu, 3 Nov 2022 15:43:42 +0000
From:   Chuck Lever III <chuck.lever@...cle.com>
To:     Jeff Layton <jlayton@...nel.org>
CC:     Theodore Ts'o <tytso@....edu>,
        "adilger.kernel@...ger.ca" <adilger.kernel@...ger.ca>,
        "Darrick J. Wong" <djwong@...nel.org>,
        "david@...morbit.com" <david@...morbit.com>,
        "trondmy@...merspace.com" <trondmy@...merspace.com>,
        Neil Brown <neilb@...e.de>, Al Viro <viro@...iv.linux.org.uk>,
        "zohar@...ux.ibm.com" <zohar@...ux.ibm.com>,
        "xiubli@...hat.com" <xiubli@...hat.com>,
        "lczerner@...hat.com" <lczerner@...hat.com>,
        "jack@...e.cz" <jack@...e.cz>, Bruce Fields <bfields@...ldses.org>,
        "brauner@...nel.org" <brauner@...nel.org>,
        "fweimer@...hat.com" <fweimer@...hat.com>,
        "linux-btrfs@...r.kernel.org" <linux-btrfs@...r.kernel.org>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "ceph-devel@...r.kernel.org" <ceph-devel@...r.kernel.org>,
        "linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
        Linux NFS Mailing List <linux-nfs@...r.kernel.org>,
        "linux-xfs@...r.kernel.org" <linux-xfs@...r.kernel.org>
Subject: Re: [PATCH v7 8/9] nfsd: remove fetch_iversion export operation



> On Oct 17, 2022, at 6:57 AM, Jeff Layton <jlayton@...nel.org> wrote:
> 
> Now that the i_version counter is reported in struct kstat, there is no
> need for this export operation.
> 
> Reviewed-by: NeilBrown <neilb@...e.de>
> Signed-off-by: Jeff Layton <jlayton@...nel.org>

Acked-by: Chuck Lever <chuck.lever@...cle.com>


> ---
> fs/nfs/export.c          | 7 -------
> fs/nfsd/nfsfh.c          | 2 --
> include/linux/exportfs.h | 1 -
> 3 files changed, 10 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/nfsfh.c b/fs/nfsd/nfsfh.c
> index 21b64ac97a06..9c1f697ffc72 100644
> --- a/fs/nfsd/nfsfh.c
> +++ b/fs/nfsd/nfsfh.c
> @@ -777,8 +777,6 @@ u64 nfsd4_change_attribute(struct kstat *stat, struct inode *inode)
> {
> 	u64 chattr;
> 
> -	if (inode->i_sb->s_export_op->fetch_iversion)
> -		return inode->i_sb->s_export_op->fetch_iversion(inode);
> 	if (stat->result_mask & STATX_VERSION) {
> 		chattr = stat->version;
> 
> 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 */
> -- 
> 2.37.3
> 

--
Chuck Lever