Hi. On 27/07/11 20:33, Christoph Hellwig wrote: > On Wed, Jul 27, 2011 at 11:35:13AM +0200, Rafael J. Wysocki wrote: >> The Pavel's objection, if I remember it correctly, was that some >> (or the majority of?) filesystems didn't implement the freezing operation, >> so they would be more vulnerable to data loss in case of a failing hibernation >> after this change. However, that's better than actively causing pain to XFS >> users. > > The objection never made sense and only means he never read the code. > freeze_super (or freeze_bdev back then) always does a sync_filesystem > before even checking if we have a freeze method, and sync_filesystem is > what we iterate over for each superblock in sync(). I've had freezing supers in TOI for a couple of years now and it has only ever helped. To be honest, if you have a ton of dirty pages, it does result in a big delay, but that's the worst of it. Regards, Nigel -- Evolution (n): A hypothetical process whereby improbable events occur with alarming frequency, order arises from chaos, and no one is given credit. _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
