Re: page_launder() bug

Linus Torvalds
2001-05-07T23:24:04Z

On Mon, 7 May 2001, Marcelo Tosatti wrote:
>
> On 7 May 2001, Linus Torvalds wrote:
>
> > But it is important to re-calculate the deadness after getting the
> > lock. Before, it was just an informed guess. After the lock, it is
> > knowledge. And you can use informed guesses for heuristics, but you
> > must _not_ use them for any serious decisions.
>
> And thats what swap_writepage() is doing:

Ehh.. swap_writepage() is called with the page locked. So it _can_ depend
on it.

If the page isn't locked there, then THAT is a bug. A major one.

Linus