NFSv4: Add post-op attributes to nfs4_proc_rename()

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/nfs4proc.c

@@ -1685,25 +1685,36 @@ static int nfs4_proc_unlink_done(struct dentry *dir, struct rpc_task *task)
 static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
 		struct inode *new_dir, struct qstr *new_name)
 {
+	struct nfs_server *server = NFS_SERVER(old_dir);
 	struct nfs4_rename_arg arg = {
 		.old_dir = NFS_FH(old_dir),
 		.new_dir = NFS_FH(new_dir),
 		.old_name = old_name,
 		.new_name = new_name,
+		.bitmask = server->attr_bitmask,
+	};
+	struct nfs_fattr old_fattr, new_fattr;
+	struct nfs4_rename_res res = {
+		.server = server,
+		.old_fattr = &old_fattr,
+		.new_fattr = &new_fattr,
 	};
-	struct nfs4_rename_res res = { };
 	struct rpc_message msg = {
 		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
 		.rpc_argp = &arg,
 		.rpc_resp = &res,
 	};
 	int			status;
 
-	status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
+	nfs_fattr_init(res.old_fattr);
+	nfs_fattr_init(res.new_fattr);
+	status = rpc_call_sync(server->client, &msg, 0);
 
 	if (!status) {
 		update_changeattr(old_dir, &res.old_cinfo);
+		nfs_post_op_update_inode(old_dir, res.old_fattr);
 		update_changeattr(new_dir, &res.new_cinfo);
+		nfs_post_op_update_inode(new_dir, res.new_fattr);
 	}
 	return status;
 }

fs/nfs/nfs4xdr.c

@@ -314,12 +314,18 @@ static int nfs_stat_to_errno(int);
 				encode_putfh_maxsz + \
 				encode_savefh_maxsz + \
 				encode_putfh_maxsz + \
-				encode_rename_maxsz)
+				encode_rename_maxsz + \
+				encode_getattr_maxsz + \
+				encode_restorefh_maxsz + \
+				encode_getattr_maxsz)
 #define NFS4_dec_rename_sz	(compound_decode_hdr_maxsz + \
 				decode_putfh_maxsz + \
 				decode_savefh_maxsz + \
 				decode_putfh_maxsz + \
-				decode_rename_maxsz)
+				decode_rename_maxsz + \
+				decode_getattr_maxsz + \
+				decode_restorefh_maxsz + \
+				decode_getattr_maxsz)
 #define NFS4_enc_link_sz	(compound_encode_hdr_maxsz + \
 				encode_putfh_maxsz + \
 				encode_savefh_maxsz + \
@@ -1339,7 +1345,7 @@ static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct n
 {
 	struct xdr_stream xdr;
 	struct compound_hdr hdr = {
-		.nops = 4,
+		.nops = 7,
 	};
 	int status;
 
@@ -1351,7 +1357,13 @@ static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct n
 		goto out;
 	if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
 		goto out;
-	status = encode_rename(&xdr, args->old_name, args->new_name);
+	if ((status = encode_rename(&xdr, args->old_name, args->new_name)) != 0)
+		goto out;
+	if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
+		goto out;
+	if ((status = encode_restorefh(&xdr)) != 0)
+		goto out;
+	status = encode_getfattr(&xdr, args->bitmask);
 out:
 	return status;
 }
@@ -3533,7 +3545,14 @@ static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_
 		goto out;
 	if ((status = decode_putfh(&xdr)) != 0)
 		goto out;
-	status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo);
+	if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
+		goto out;
+	/* Current FH is target directory */
+	if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
+		goto out;
+	if ((status = decode_restorefh(&xdr)) != 0)
+		goto out;
+	decode_getfattr(&xdr, res->old_fattr, res->server);
 out:
 	return status;
 }

include/linux/nfs_xdr.h

@@ -630,11 +630,15 @@ struct nfs4_rename_arg {
 	const struct nfs_fh *		new_dir;
 	const struct qstr *		old_name;
 	const struct qstr *		new_name;
+	const u32 *			bitmask;
 };
 
 struct nfs4_rename_res {
+	const struct nfs_server *	server;
 	struct nfs4_change_info		old_cinfo;
+	struct nfs_fattr *		old_fattr;
 	struct nfs4_change_info		new_cinfo;
+	struct nfs_fattr *		new_fattr;
 };
 
 struct nfs4_setclientid {