On Wednesday 10 February 2010, Oliver Neukum wrote: > Am Mittwoch, 10. Februar 2010 11:58:22 schrieb Rafael J. Wysocki: > > On Wednesday 10 February 2010, Oliver Neukum wrote: > > > Am Mittwoch, 10. Februar 2010 11:34:23 schrieb Rafael J. Wysocki: > > > > Actually, doing the sync() in the kernel is a hack that we decided not to > > > > remove just because the users space didin't do the right thing on some systems. > > > > If the user space always synced disks before suspending, we wouldn't have to > > > > do that in the kernel. > > > > > > If you sync in user space will you not have an inevitable race condition? > > > > Do you mean the race with applications that write to disks while the sustem is > > suspending? > > Yes. That would matter if sync meant mandatory flushing all data to the storage medium, but it doesn't. From a filesystem point of view it's an advisory thing, something like "I wish you flushed buffers right now". Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
