diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index 01c5e8b1941d2faea2732a181b1bec1fcdd85302..183c6b123d0f53bd43209cd6a6634aaa8b9f484f 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -1328,10 +1328,13 @@ static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req,
 
 	encode_nfs_fh3(xdr, NFS_FH(args->inode));
 	encode_uint32(xdr, args->mask);
+
+	base = req->rq_slen;
 	if (args->npages != 0)
 		xdr_write_pages(xdr, args->pages, 0, args->len);
+	else
+		xdr_reserve_space(xdr, NFS_ACL_INLINE_BUFSIZE);
 
-	base = req->rq_slen;
 	error = nfsacl_encode(xdr->buf, base, args->inode,
 			    (args->mask & NFS_ACL) ?
 			    args->acl_access : NULL, 1, 0);