diff options
| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-06-26 13:50:43 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-06-28 17:20:46 -0400 |
| commit | bd00f84bc57f42df32c728e86329a5c30f221657 (patch) | |
| tree | 08eaa71f9354381f15135445b7ac7d6f431e855c | |
| parent | b760b3131d962dd35925fb65956afe621fa65ec4 (diff) | |
SUNRPC: Simplify the end-of-buffer calculation in xdr_read_pages
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| -rw-r--r-- | net/sunrpc/xdr.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c index faf6753c593d..834d4da9cdb0 100644 --- a/net/sunrpc/xdr.c +++ b/net/sunrpc/xdr.c @@ -762,11 +762,10 @@ unsigned int xdr_read_pages(struct xdr_stream *xdr, unsigned int len) { struct xdr_buf *buf = xdr->buf; struct kvec *iov; - ssize_t shift; unsigned int nwords = XDR_QUADLEN(len); unsigned int cur = xdr_stream_pos(xdr); unsigned int end; - int padding; + unsigned int padding; if (xdr->nwords == 0) return 0; @@ -782,15 +781,15 @@ unsigned int xdr_read_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); + xdr->nwords = XDR_QUADLEN(buf->len - cur); + padding = (nwords << 2) - len; xdr->iov = iov = buf->tail; /* Compute remaining message length. */ - end = iov->iov_len; - shift = buf->buflen - buf->len; - if (end > shift + padding) - end -= shift; - else - end = padding; + end = ((xdr->nwords - nwords) << 2) + padding; + if (end > iov->iov_len) + end = iov->iov_len; + /* * Position current pointer at beginning of tail, and * set remaining message length. |