From c337d3655ce85e12c7c476cb81406521926cacd2 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 21 Jun 2012 17:05:37 -0400 Subject: SUNRPC: xdr_read_pages should return the amount of XDR encoded page data Callers of xdr_read_pages() will want to know exactly how much XDR data is encoded in the pages after the data realignment. Signed-off-by: Trond Myklebust --- net/sunrpc/xdr.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'net/sunrpc') diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c index 5643feb6c645..80d518644cf8 100644 --- a/net/sunrpc/xdr.c +++ b/net/sunrpc/xdr.c @@ -745,8 +745,10 @@ EXPORT_SYMBOL_GPL(xdr_inline_decode); * Moves data beyond the current pointer position from the XDR head[] buffer * into the page list. Any data that lies beyond current position + "len" * bytes is moved into the XDR tail[]. + * + * Returns the number of XDR encoded bytes now contained in the pages */ -void xdr_read_pages(struct xdr_stream *xdr, unsigned int len) +unsigned int xdr_read_pages(struct xdr_stream *xdr, unsigned int len) { struct xdr_buf *buf = xdr->buf; struct kvec *iov; @@ -756,7 +758,7 @@ void xdr_read_pages(struct xdr_stream *xdr, unsigned int len) int padding; if (xdr->nwords == 0) - return; + return 0; if (nwords > xdr->nwords) { nwords = xdr->nwords; len = nwords << 2; @@ -787,6 +789,7 @@ void xdr_read_pages(struct xdr_stream *xdr, unsigned int len) xdr->end = (__be32 *)((char *)iov->iov_base + end); xdr->page_ptr = NULL; xdr->nwords = XDR_QUADLEN(end - padding); + return len; } EXPORT_SYMBOL_GPL(xdr_read_pages); @@ -802,7 +805,7 @@ EXPORT_SYMBOL_GPL(xdr_read_pages); */ void xdr_enter_page(struct xdr_stream *xdr, unsigned int len) { - xdr_read_pages(xdr, len); + len = xdr_read_pages(xdr, len); /* * Position current pointer at beginning of tail, and * set remaining message length. -- cgit v1.2.3-59-g8ed1b