> > resume from disk is actually pretty hard to do in way it is readed linearily.
> >
> > While playing with swsusp patches (== suspend to disk) I found out that
> > it was slow. It needs to do atomic snapshot, and only reasonable way to
> > do that is free half of RAM, cli() and copy.
>
> Note that "resume from disk" does _not_ have to necessarily resume kernel
> data structures. It is enough if it just resumes the caches etc.
> Don't get _too_ hung up about the power-management kind of "invisible
> suspend/resume" sequence where you resume the whole kernel state.
Ugh. Now I'm confused. How do you do usefull resume from disk when you
don't restore complete state? Do you propose something like "write
only pagecache to disk"?
Pavel
-- The best software in life is free (not shareware)! Pavel GCM d? s-: !g p?:+ au- a--@ w+ v- C++@ UL+++ L++ N++ E++ W--- M- Y- R+ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/