On Wed, 10 Nov 2010, David Rientjes wrote:
> > diff --git a/mm/page-writeback.c b/mm/page-writeback.c
> > index bf85062..1ebfb86 100644
> > --- a/mm/page-writeback.c
> > +++ b/mm/page-writeback.c
> > @@ -1158,7 +1158,7 @@ EXPORT_SYMBOL(write_one_page);
> > int __set_page_dirty_no_writeback(struct page *page)
> > {
> > if (!PageDirty(page))
> > - SetPageDirty(page);
> > + return !TestSetPageDirty(page);
> > return 0;
> > }
>
> No need for a conditional, just return !TestSetPageDirty(page).
>
Oops, just read Andrew's reply to v1 of the patch about the cacheline
invalidation of bts, sorry for the noise.
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