On Wed, Jul 24, 2013 at 10:55:41PM +0400, Pavel Emelyanov wrote: > > > > Well, some part of information already lays in pte (such as 'file' bit, > > swap entries) so it looks natural i think to work on this level. but > > letme think if use page struct for that be more convenient... > > It hardly will be. Consider we have a page shared between two tasks, > then first one "touches" it and soft-dirty is put onto his PTE and, > subsequently, the page itself. The we go and clear sofr-dirty for the > 2nd task. What should we do with the soft-dirty bit on the page? Indeed, this won't help. Well then, bippidy-boppidy-boo, our pants are metaphorically on fire (c) > > The soft-dirty thing watches changes in the virtual memory, not in > the physical one. -- 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>