On Mon, 3 May 2010, Rik van Riel wrote: > > migrate.c requires rmap to be able to find all ptes mapping a page at > all times, otherwise the migration entry can be instantiated, but it > can't be removed if the second rmap_walk fails to find the page. Please correct me if I'm wrong, but this patch looks like pure and utter garbage. It looks like it makes execve() do a totally insane "create and then immediately destroy temporary vma and anon_vma chain" for a case that is unlikely to ever matter. In fact, for a case that isn't even normally _enabled_, namely migration. Why would we want to slow down execve() for that? Linus -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>