+ return 0;
+
+ /*
+ * Check to make sure that we got the right number of
+ * bytes.
+ *
+ * If more than one page was used, then compute the length
+ * of the data in the request as the total size of the
+ * request minus the transport protocol headers minus the
+ * RPC protocol headers minus the NFS protocol fields
+ * already consumed. If the request fits into a single
+ * page, then compete the length of the data as the size
+ * of the NFS portion of the request minus the NFS
+ * protocol fields already consumed.
+ */
+ hdr = (void*)p - rqstp->rq_arg.head[0].iov_base;
+ if (rqstp->rq_respages != rqstp->rq_pages + 1) {
+ dlen = rqstp->rq_arg.len -
+ (PAGE_SIZE - rqstp->rq_arg.head[0].iov_len) - hdr;
+ } else {
+ dlen = rqstp->rq_arg.head[0].iov_len - hdr;
+ }
+ /*
+ * Round the length of the data which was specified up to
+ * the next multiple of XDR units and then compare that
+ * against the length which was actually received.
+ */
+ if (dlen != ((len + 3) & ~0x3))
+ return 0;
+
+ rqstp->rq_vec[0].iov_base = (void*)p;
+ rqstp->rq_vec[0].iov_len = rqstp->rq_arg.head[0].iov_len - hdr;