On Tue, Feb 05, 2013 at 05:21:52PM +0800, Lin Feng wrote: > get_user_pages() always tries to allocate pages from movable zone, which is not > reliable to memory hotremove framework in some case. > > This patch introduces a new library function called get_user_pages_non_movable() > to pin pages only from zone non-movable in memory. > It's a wrapper of get_user_pages() but it makes sure that all pages come from > non-movable zone via additional page migration. > > Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > Cc: Mel Gorman <mgorman@xxxxxxx> > Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> > Cc: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx> > Cc: Jeff Moyer <jmoyer@xxxxxxxxxx> > Cc: Minchan Kim <minchan@xxxxxxxxxx> > Cc: Zach Brown <zab@xxxxxxxxxx> > Reviewed-by: Tang Chen <tangchen@xxxxxxxxxxxxxx> > Reviewed-by: Gu Zheng <guz.fnst@xxxxxxxxxxxxxx> > Signed-off-by: Lin Feng <linfeng@xxxxxxxxxxxxxx> I already had started the review of V1 before this was sent unfortunately. However, I think the feedback I gave for V1 is still valid so I'll wait for comments on that review before digging further. -- Mel Gorman SUSE Labs -- 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>