On Tue, 19 Jun 2007, Mel Gorman wrote: > Agreed. When I put this together first, I felt I would be able to isolate > pages of different types on migratelist but that is not the case as migration > would not be able to tell the difference between a LRU page and a pagetable > page. I'll rename cc->migratelist to cc->migratelist_lru with the view to > potentially adding cc->migratelist_pagetable or cc->migratelist_slab later.
Right. The particular issue with moving page table pages or slab pages is that you do not have a LRU. The page state needs to be established in a different way and there needs to be mechanism to ensure that the page is not currently being setup or torn down. For the slab pages I have relied on page->inuse > 0 to signify a page in use. I am not sure how one would realize that for page table pages. - 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/
