On 3/31/10, Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx> wrote: > On Tue, 30 Mar 2010, Minchan Kim wrote: > >> Hi, Bob >> >> On Mon, Mar 29, 2010 at 11:57 PM, Bob Liu <lliubbo@xxxxxxxxx> wrote: >> > In current do_migrate_pages(),if from_nodes and to_nodes have some >> > intersect nodes,pages in these intersect nodes will also be >> > migrated. >> > eg. Assume that, from_nodes: 1,2,3,4 to_nodes: 2,3,4,5. Then these >> > migrates will happen: >> > migrate_pages(4,5); >> > migrate_pages(3,4); >> > migrate_pages(2,3); >> > migrate_pages(1,2); >> > >> > But the user just want all pages in from_nodes move to to_nodes, >> > only migrate(1,2)(ignore the intersect nodes.) can satisfied >> > the user's request. >> > >> > I amn't sure what's migrate_page's semantic. >> > Hoping for your suggestions. >> >> I didn't see 8:migratepages Lee pointed at that time. >> The description matches current migrate_pages's behavior exactly. >> >> I agree Lee's opinion. >> Let's wait Christoph's reply what is semantic >> and why it doesn't have man page. > > Manpage is part of numatools. > > The intended semantic is the preservation of the relative position of the > page to the beginning of the node set. If you do not want to preserve the > relative position then just move portions of the nodes around. > Hmm., Sorry I still haven't understand your mention :-) My concern was why move the pages in the intersect nodes.I think skipping this migration we can also satisfy the user's request. In the above semantic, I haven't got the result. Thanks! -- Regards, -Bob -- 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>