On Mon, 29 Jan 2018 17:06:14 -0500 "Zi Yan" <zi.yan@xxxxxxxxxxxxxx> wrote: > I discover that this patch does not hold mmap_sem while migrating pages in > do_move_pages_to_node(). > > A simple fix below moves mmap_sem from add_page_for_migration() > to the outmost do_pages_move(): I'm not surprised. Why does do_move_pages_to_node() need mmap_sem and how is a reader to discover that fact??? -- 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/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
