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| author |   Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-06-28 17:17:48 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-06-28 17:17:48 -0400 |
| commit | 1537693ceaa8d6484f1ce631bec85658bfa9816c (patch) | |
| tree | 9283d433f761de0af804a3d1ea9f9f3946951118 /net/sunrpc/xdr.c | |
| parent | SUNRPC: xdr_read_pages needs to clear xdr->page_ptr. (diff) | |
| download | linux-dev-1537693ceaa8d6484f1ce631bec85658bfa9816c.tar.xz linux-dev-1537693ceaa8d6484f1ce631bec85658bfa9816c.zip | |
SUNRPC: Clean up xdr_set_iov()
Remove the 'p' argument, since that is only ever set by xdr_init_decode.
Add sanity checking of 'p' inside xdr_init_decode itself.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc/xdr.c')
| -rw-r--r-- | net/sunrpc/xdr.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c index 539c19fb91de..21d041cf7f65 100644 --- a/net/sunrpc/xdr.c +++ b/net/sunrpc/xdr.c @@ -554,13 +554,11 @@ void xdr_write_pages(struct xdr_stream *xdr, struct page **pages, unsigned int b EXPORT_SYMBOL_GPL(xdr_write_pages); static void xdr_set_iov(struct xdr_stream *xdr, struct kvec *iov, - __be32 *p, unsigned int len) + unsigned int len) { if (len > iov->iov_len) len = iov->iov_len; - if (p == NULL) - p = (__be32*)iov->iov_base; - xdr->p = p; + xdr->p = (__be32*)iov->iov_base; xdr->end = (__be32*)(iov->iov_base + len); xdr->iov = iov; xdr->page_ptr = NULL; @@ -607,7 +605,7 @@ static void xdr_set_next_page(struct xdr_stream *xdr) newbase -= xdr->buf->page_base; if (xdr_set_page_base(xdr, newbase, PAGE_SIZE) < 0) - xdr_set_iov(xdr, xdr->buf->tail, NULL, xdr->buf->len); + xdr_set_iov(xdr, xdr->buf->tail, xdr->buf->len); } static bool xdr_set_next_buffer(struct xdr_stream *xdr) @@ -616,7 +614,7 @@ static bool xdr_set_next_buffer(struct xdr_stream *xdr) xdr_set_next_page(xdr); else if (xdr->iov == xdr->buf->head) { if (xdr_set_page_base(xdr, 0, PAGE_SIZE) < 0) - xdr_set_iov(xdr, xdr->buf->tail, NULL, xdr->buf->len); + xdr_set_iov(xdr, xdr->buf->tail, xdr->buf->len); } return xdr->p != xdr->end; } @@ -633,9 +631,11 @@ void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p) xdr->scratch.iov_base = NULL; xdr->scratch.iov_len = 0; if (buf->head[0].iov_len != 0) - xdr_set_iov(xdr, buf->head, p, buf->len); + xdr_set_iov(xdr, buf->head, buf->len); else if (buf->page_len != 0) xdr_set_page_base(xdr, 0, buf->len); + if (p != NULL && p > xdr->p && xdr->end >= p) + xdr->p = p; } EXPORT_SYMBOL_GPL(xdr_init_decode); |