On Thu, Mar 30 2006, Andrew Morton wrote:
> Jens Axboe <[email protected]> wrote:
> >
> > > > +static void *page_cache_pipe_buf_map(struct file *file,
> > > > + struct pipe_inode_info *info,
> > > > + struct pipe_buffer *buf)
> > > > +{
> > > > + struct page *page = buf->page;
> > > > +
> > > > + lock_page(page);
> > > > +
> > > > + if (!PageUptodate(page)) {
> > >
> > > || page->mapping == NULL
> >
> > Fixed
>
> Actually that wasn't right. If the page was truncated then we shouldn't
> return -EIO to userspace. We should return zero, as this is the first
> page.
_if_ this is the first page, then agree.
> Which means either returning an ERR_PTR here for -EIO or re-checking i_size
> in the caller. Maybe the latter?
The latter sounds better, I'll add that.
--
Jens Axboe
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