SUNRPC: Fix the return value of xdr_align_pages()

The callers of xdr_align_pages() expect it to return the number of bytes
of actual XDR data remaining in the pages.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c
index 0afba1b4b656..fbbd1c475b43 100644
--- a/net/sunrpc/xdr.c
+++ b/net/sunrpc/xdr.c
@@ -742,6 +742,8 @@ static unsigned int xdr_align_pages(struct xdr_stream *xdr, unsigned int len)
         /* Truncate page data and move it into the tail */
         if (buf->page_len > len)
                 xdr_shrink_pagelen(buf, buf->page_len - len);
+        else
+                len = buf->page_len;
         xdr->nwords = XDR_QUADLEN(buf->len - cur);
         return len;
 }