On Tue, 17 Jul 2007 david@xxxxxxx wrote: > > But what about the freezer? The original reason for using kexec was to > > avoid the need for the freezer. With no freezer, while the original > > kernel is busy powering down its devices, user tasks will be free to > > carry out I/O -- which will make the memory snapshot inconsistent with > > the on-disk data structures. > > no, user tasks just don't get scheduled during shutdown. But a user task may be holding a lock which is needed for putting some device into low-power mode. It can't release that lock if it doesn't get scheduled. Alan Stern _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
