nfsd4: move proc_compound xdr encode init to helper

Mechanical transformation with no change of behavior.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 94ef528..f809aa8 100644 (file)
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1253,6 +1253,18 @@ static bool need_wrongsec_check(struct svc_rqst *rqstp)
        return !(nextd->op_flags & OP_HANDLES_WRONGSEC);
 }
 
+static void svcxdr_init_encode(struct svc_rqst *rqstp,
+                              struct nfsd4_compoundres *resp)
+{
+       struct xdr_stream *xdr = &resp->xdr;
+       struct xdr_buf *buf = &rqstp->rq_res;
+       struct kvec *head = buf->head;
+
+       xdr->buf = buf;
+       xdr->p   = head->iov_base + head->iov_len;
+       xdr->end = head->iov_base + PAGE_SIZE;
+}
+
 /*
  * COMPOUND call.
  */
@@ -1270,13 +1282,10 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
        u32             plen = 0;
        __be32          status;
 
-       resp->xdr.buf = &rqstp->rq_res;
-       resp->xdr.p = rqstp->rq_res.head[0].iov_base +
-                                               rqstp->rq_res.head[0].iov_len;
+       svcxdr_init_encode(rqstp, resp);
        resp->tagp = resp->xdr.p;
        /* reserve space for: taglen, tag, and opcnt */
        resp->xdr.p += 2 + XDR_QUADLEN(args->taglen);
-       resp->xdr.end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
        resp->taglen = args->taglen;
        resp->tag = args->tag;
        resp->opcnt = 0;