On Tue, Apr 14, 2009 at 10:39:54PM +0900, KOSAKI Motohiro wrote: > I guess you dislike get_user_page_fast() grab pte_lock too, right? If get_user_page_fast is vetoed to run a set_bit on the already cache hot and exclusive struct page, I doubt taking a potentially cache cold, mm-wide or pmd-wide pte_lock is ok. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html