SUNRPC: Unexport xdr_partial_copy_from_skb()

It is no longer used outside of net/sunrpc/socklib.c
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

include/linux/sunrpc/xdr.h

@@ -186,8 +186,6 @@ struct xdr_skb_reader {
 typedef size_t (*xdr_skb_read_actor)(struct xdr_skb_reader *desc, void *to, size_t len);
 
 extern int csum_partial_copy_to_xdr(struct xdr_buf *, struct sk_buff *);
-extern ssize_t xdr_partial_copy_from_skb(struct xdr_buf *, unsigned int,
-		struct xdr_skb_reader *, xdr_skb_read_actor);
 
 extern int xdr_encode_word(struct xdr_buf *, unsigned int, u32);
 extern int xdr_decode_word(struct xdr_buf *, unsigned int, u32 *);

net/sunrpc/socklib.c

@@ -69,7 +69,8 @@ static size_t xdr_skb_read_and_csum_bits(struct xdr_skb_reader *desc, void *to,
  * @copy_actor: virtual method for copying data
  *
  */
-ssize_t xdr_partial_copy_from_skb(struct xdr_buf *xdr, unsigned int base, struct xdr_skb_reader *desc, xdr_skb_read_actor copy_actor)
+static ssize_t
+xdr_partial_copy_from_skb(struct xdr_buf *xdr, unsigned int base, struct xdr_skb_reader *desc, xdr_skb_read_actor copy_actor)
 {
 	struct page	**ppage = xdr->pages;
 	unsigned int	len, pglen = xdr->page_len;
@@ -140,7 +141,6 @@ ssize_t xdr_partial_copy_from_skb(struct xdr_buf *xdr, unsigned int base, struct
 out:
 	return copied;
 }
-EXPORT_SYMBOL_GPL(xdr_partial_copy_from_skb);
 
 /**
  * csum_partial_copy_to_xdr - checksum and copy data