Messages in this thread | | | Subject | Re: The IBM order relaxation patch | Date | Thu, 7 Feb 2002 00:18:47 +0000 (GMT) | From | Alan Cox <> |
| |
> >with a GPF flag? What they describe does not happen in an > >interrupt context, so we can sleep. > > Because nobody even *tries* to free adjacent pages to build up > a free order-2 area. You could wait really long ...
Without the rmap patch you can't easily do it
> rmap method could help here, because with reverse mappings we > can at least try to free adjacent areas (because we then at least > *know* who's using the pages).
rmap definitely makes it a real no brainer to do this at least for small clusters of pages. Doing large chunks gets progressively harder - 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/
| |