On Mon, Nov 07, 2011 at 12:21:35PM +0800, Nai Xia wrote: > If an anonymous vma has not yet been faulted, move_page_tables() in move_vma() > is not necessary for it. I actually thought of adding that (in fact fork has it and it's more likely to be beneficial for fork than for mremap I suspect), but this adds a branch to the fast path for a case that shouldn't normally materialize. So I don't think it's worth adding it as I expect it to add overhead in average. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>