On Wednesday, December 18, 2013 06:43:43 AM Tejun Heo wrote: [...]
> If filesystems need an indication that the underlying device is no > longer functional, please go ahead and add it, but please keep in mind > all these are completely asynchronous. Nothing guarantees you that > such events would happen in any specific order. IOW, you can be at > *ANY* point in your warm unplug path and the device is hot unplugged, > which essentially forces all the code paths to be ready for the worst, > and that's exactly why there isn't much effort in trying to separate > out warm and hot unplug paths. Yes. Devices can go away at any point without notice. Even PCI devices that have never been assumed to be hot-removable. Any piece of code in the kernel needs to be prepared to deal with such situations. Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
