[PATCH v8 RESEND 8/8] nfsd: remove fetch_iversion export operation

[Jeff Layton <jlayton@kernel.org>]

Now that the i_version counter is reported in struct kstat, there is no
need for this export operation.

Acked-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/nfs/export.c          | 7 -------
 fs/nfsd/nfsfh.c          | 3 ---
 include/linux/exportfs.h | 1 -
 3 files changed, 11 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 3a01c8601712..76ea268dc420 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -778,11 +778,8 @@ 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_CHANGE_COOKIE) {
 		chattr = stat->change_cookie;
-
 		if (S_ISREG(inode->i_mode) &&
 		    !(stat->attributes & STATX_ATTR_CHANGE_MONOTONIC)) {
 			chattr += (u64)stat->ctime.tv_sec << 30;
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 */
-- 
2.39.1