On Fri, 11 May 2012, Peter Zijlstra wrote: > On Fri, 2012-05-11 at 13:37 +0900, Minchan Kim wrote: > > I hope hear opinion from rt guys, too. > > Its a problem yes, not sure your solution is any good though. As it > stands mlock() simply doesn't guarantee no faults, all it does is > guarantee no major faults. There are two different way to lock pages down in memory that have different counters in /proc/<pid>/status and also different semantics. VmLck: Mlocked pages. This means there is a prohibition against evicting pages. These pages can undergo page migration and therefore also be handled by compation. These pages have PG_mlock set. VmPin: Pinned pages. Page cannot be moved. These pages have an elevated refcount that makes page migration fail. -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>