On Sat, Dec 14, 2013 at 7:07 AM, Tejun Heo <t...@kernel.org> wrote: > >> All pending I/O should have been flushed when suspend/hibernate >> started, and there's no point in trying to update metadata on a > > Frozen or not, it isn't guaranteed that bdi wb queue is empty when the > system went to suspend. They're likely to be empty but there's no > guarantee. Conversion to workqueue only makes the behavior more > deterministic.
Looks we should guarantee that I/O queue is emptied before system sleep, otherwise it may be a bug, since battery may be drained up to cause data loss or block devices may be disconnected during sleep. Thanks, -- Ming Lei -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
