On Wed, 2005-02-02 at 14:09 +1100, Nick Piggin wrote: > On Tue, 2005-02-01 at 18:49 -0800, Christoph Lameter wrote: > > On Wed, 2 Feb 2005, Nick Piggin wrote:
> > I mean we could just speculatively copy, risk copying crap and > > discard that later when we find that the pte has changed. This would > > simplify the function: > > > > I think this may be the better approach. Anyone else? > Not to say it is perfect either. Normal semantics say not to touch a page if it is not somehow pinned. So this may cause problems in corner cases (DEBUG_PAGEALLOC comes to mind... hopefully nothing else). But I think a plain read of the page when it isn't pinned is less yucky than writing into the non-pinned struct page. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
