On Tue, Sep 10, 2019 at 12:39 AM Eric Biggers <ebiggers@xxxxxxxxxx> wrote: > > Core file operations (open, close, sync, msync, truncate) are > > now allowed to update the measurement immediately. In order > > to maintain sufficient write performance for writes, add a > > latency tunable delayed work workqueue for computing the > > measurements. > > This still doesn't make it crash-safe. So why is it okay? If Android is the load, this makes it crash safe 99% of the time and that is considerably better than 0% of the time. That said, we have now a patch draft forming up that pushes the update to the ext4 journal. With this patch on top we should reach the magical 100% given data=journal mount. One step at a time. -- Janne
