On Mon, 10 May 2010, Mel Gorman wrote: > > A simple way to disallow migration of pages is to increment the refcount > > of a page. > I guess it could be done by walking the page-tables in advance of the move > and elevating the page count of any pages faulted and then finding those > pages afterwards. The fail path would be a bit of a pain though if the page > tables are partially moved though. It's unnecessarily complicated when the > temporary stack can be easily avoided. Faulting during exec? Dont we hold mmap_sem for write? A get_user_pages() or so on the range will increment the refcount. -- 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>