On Thu, Aug 09, 2012 at 02:33:12PM +0530, Amit Shah wrote:
> > @@ -807,9 +807,31 @@ static int pipe_to_sg(struct pipe_inode_info *pipe,
> > struct pipe_buffer *buf,
> >
> > len = min(buf->len, sd->len);
> > sg_set_page(&(sgl->sg[sgl->n]), buf->page, len, buf->offset);
> > - sgl->n++;
> > - sgl->len += len;
> > + } else {
> > + /* Failback to copying a page */
> > + struct page *page = alloc_page(GFP_KERNEL);
>
> I prefer zeroing out the page. If there's not enough data to be
> filled in the page, the remaining data can be leaked to the host.
get_zeroed_page()?
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