On Mon, 3 May 2010, Linus Torvalds wrote: > > 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? Alternate suggestions: - clean up the patch so that it is explicitly abouy migration, and doesn't even get enabled for anything else. - make the migration code take the VM lock for writing (why doesn't it already?) and never race with things like this in the first place. - explain why the new code isn't any slower. Hmm? 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>