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. > Must > sb writeout start even there isn't any data? No. -- Best Regards, Artem Bityutskiy (ÐÑÑÑÐ ÐÐÑÑÑÐÐÐ) -- 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>