Re: [patch 2] mm: speculative get_page

Dave Hansen
2005-06-28T16:03:34Z

On Tue, 2005-06-28 at 23:16 +1000, Nick Piggin wrote:
> I think there are a a few ways that bits can be reclaimed if we
> start digging. swsusp uses 2 which seems excessive though may be
> fully justified.

They (swsusp) actually don't need the bits at all until suspend-time, at
all. Somebody coded up a "dynamic page flags" patch that let them kill
the page->flags use, but it didn't really go anywhere. Might be nice if
someone dug it up. I probably have a copy somewhere.

-- Dave