On Fri, Oct 08, 2010 at 01:28:07PM +0300, Artem Bityutskiy wrote: > On Fri, 2010-10-08 at 18:27 +0800, Wu, Xia wrote: > > > However, when the next wake-up interrupt happens is not defined. It can > > > happen 1ms after, or 1 minute after, or 1 hour after. What Christoph > > > says is that there should be some guarantee that sb writeout starts, > > > say, within 5 to 10 seconds interval. Deferrable timers do not guarantee > > > this. But take a look at the range hrtimers - they do exactly this. > > > > If the system is in sleep state, is there any data which should be written? > > May be yes, may be no. > Thanks for the quick response, Artem. May I know what might need to be written out when system is really idle? -Yong -- 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>