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SubjectRe: [patch 6/10] mm: be sure to trim blocks
On Tue, Jan 16, 2007 at 08:14:16PM +0100, Peter Zijlstra wrote:
> On Tue, 2007-01-16 at 18:36 +0100, Peter Zijlstra wrote:
> > buf, bytes);
> > > @@ -1935,10 +1922,9 @@ generic_file_buffered_write(struct kiocb
> > > cur_iov, iov_offset, bytes);
> > > flush_dcache_page(page);
> > > status = a_ops->commit_write(file, page, offset, offset+bytes);
> > > - if (status == AOP_TRUNCATED_PAGE) {
> > > - page_cache_release(page);
> > > - continue;
> > > - }
> > > + if (unlikely(status))
> > > + goto fs_write_aop_error;
> > > +
> >
> > I don't think this is correct, see how status >= 0 is used a few lines
> > downwards. Perhaps something along the lines of an
> > is_positive_aop_return() to test on?
>
> Hmm, if commit_write() will never return non error positive values then
> this and 8/10 look sane.

It's really ugly, but it looks like at least some filesystems do. So
I'll fix up this.
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