On Fri, 31 Aug 2018 17:48:48 -0400 Andrea Arcangeli <aarcange@xxxxxxxxxx> wrote: > get_mempolicy(MPOL_F_NODE|MPOL_F_ADDR) called a get_user_pages that > would not be waiting for userfaults before failing and it would hit on > a SIGBUS instead. Using get_user_pages_locked/unlocked instead will > allow get_mempolicy to allow userfaults to resolve the fault and fill > the hole, before grabbing the node id of the page. What is the userspace visible impact of this change?
