[PATCH 11/50] nfsd4: move proc_compound xdr encode init to helper

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From: "J. Bruce Fields" <bfields@xxxxxxxxxx>

Mechanical transformation with no change of behavior.

Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
---
 fs/nfsd/nfs4proc.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 7248a78..80e5921 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1262,6 +1262,17 @@ 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.
  */
@@ -1277,13 +1288,10 @@ 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;
-- 
1.8.5.3

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