NFSv4: Add post-op attributes to NFSv4 write and commit callbacks.

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

fs/nfs/nfs4proc.c

@@ -2169,8 +2169,10 @@ nfs4_write_done(struct rpc_task *task)
 		rpc_restart_call(task);
 		return;
 	}
-	if (task->tk_status >= 0)
+	if (task->tk_status >= 0) {
 		renew_lease(NFS_SERVER(inode), data->timestamp);
+		nfs_post_op_update_inode(inode, data->res.fattr);
+	}
 	/* Call back common NFS writeback processing */
 	nfs_writeback_done(task);
 }
@@ -2186,6 +2188,7 @@ nfs4_proc_write_setup(struct nfs_write_data *data, int how)
 		.rpc_cred = data->cred,
 	};
 	struct inode *inode = data->inode;
+	struct nfs_server *server = NFS_SERVER(inode);
 	int stable;
 	int flags;
 	
@@ -2197,6 +2200,8 @@ nfs4_proc_write_setup(struct nfs_write_data *data, int how)
 	} else
 		stable = NFS_UNSTABLE;
 	data->args.stable = stable;
+	data->args.bitmask = server->attr_bitmask;
+	data->res.server = server;
 
 	data->timestamp   = jiffies;
 
@@ -2218,6 +2223,8 @@ nfs4_commit_done(struct rpc_task *task)
 		rpc_restart_call(task);
 		return;
 	}
+	if (task->tk_status >= 0)
+		nfs_post_op_update_inode(inode, data->res.fattr);
 	/* Call back common NFS writeback processing */
 	nfs_commit_done(task);
 }
@@ -2233,8 +2240,12 @@ nfs4_proc_commit_setup(struct nfs_write_data *data, int how)
 		.rpc_cred = data->cred,
 	};	
 	struct inode *inode = data->inode;
+	struct nfs_server *server = NFS_SERVER(inode);
 	int flags;
 	
+	data->args.bitmask = server->attr_bitmask;
+	data->res.server = server;
+
 	/* Set the initial flags for the task.  */
 	flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
 

fs/nfs/nfs4xdr.c

@@ -159,16 +159,20 @@ static int nfs_stat_to_errno(int);
 				op_decode_hdr_maxsz + 2)
 #define NFS4_enc_write_sz	(compound_encode_hdr_maxsz + \
 				encode_putfh_maxsz + \
-				op_encode_hdr_maxsz + 8)
+				op_encode_hdr_maxsz + 8 + \
+				encode_getattr_maxsz)
 #define NFS4_dec_write_sz	(compound_decode_hdr_maxsz + \
 				decode_putfh_maxsz + \
-				op_decode_hdr_maxsz + 4)
+				op_decode_hdr_maxsz + 4 + \
+				decode_getattr_maxsz)
 #define NFS4_enc_commit_sz	(compound_encode_hdr_maxsz + \
 				encode_putfh_maxsz + \
-				op_encode_hdr_maxsz + 3)
+				op_encode_hdr_maxsz + 3 + \
+				encode_getattr_maxsz)
 #define NFS4_dec_commit_sz	(compound_decode_hdr_maxsz + \
 				decode_putfh_maxsz + \
-				op_decode_hdr_maxsz + 2)
+				op_decode_hdr_maxsz + 2 + \
+				decode_getattr_maxsz)
 #define NFS4_enc_open_sz        (compound_encode_hdr_maxsz + \
                                 encode_putfh_maxsz + \
                                 op_encode_hdr_maxsz + \
@@ -1799,7 +1803,7 @@ static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writ
 {
 	struct xdr_stream xdr;
 	struct compound_hdr hdr = {
-		.nops = 2,
+		.nops = 3,
 	};
 	int status;
 
@@ -1809,6 +1813,9 @@ static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writ
 	if (status)
 		goto out;
 	status = encode_write(&xdr, args);
+	if (status)
+		goto out;
+	status = encode_getfattr(&xdr, args->bitmask);
 out:
 	return status;
 }
@@ -1820,7 +1827,7 @@ static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_wri
 {
 	struct xdr_stream xdr;
 	struct compound_hdr hdr = {
-		.nops = 2,
+		.nops = 3,
 	};
 	int status;
 
@@ -1830,6 +1837,9 @@ static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_wri
 	if (status)
 		goto out;
 	status = encode_commit(&xdr, args);
+	if (status)
+		goto out;
+	status = encode_getfattr(&xdr, args->bitmask);
 out:
 	return status;
 }
@@ -4001,6 +4011,9 @@ static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_wr
 	if (status)
 		goto out;
 	status = decode_write(&xdr, res);
+	if (status)
+		goto out;
+	decode_getfattr(&xdr, res->fattr, res->server);
 	if (!status)
 		status = res->count;
 out:
@@ -4024,6 +4037,9 @@ static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_w
 	if (status)
 		goto out;
 	status = decode_commit(&xdr, res);
+	if (status)
+		goto out;
+	decode_getfattr(&xdr, res->fattr, res->server);
 out:
 	return status;
 }

include/linux/nfs_xdr.h

@@ -256,6 +256,7 @@ struct nfs_writeargs {
 	enum nfs3_stable_how	stable;
 	unsigned int		pgbase;
 	struct page **		pages;
+	const u32 *		bitmask;
 };
 
 struct nfs_writeverf {
@@ -267,6 +268,7 @@ struct nfs_writeres {
 	struct nfs_fattr *	fattr;
 	struct nfs_writeverf *	verf;
 	__u32			count;
+	const struct nfs_server *server;
 };
 
 /*