On Sat, 10 Jan 2009, Andrew Morton wrote: > > More importantly, the filesystem driver has to be able to read older > filesystem instances. This is a userspace-visible binary interface! > A really complex one. Well, the good news is that read-only filesystems are _sooo_ much simpler than any real filesystem that quite frankly, on a "complexity" scale it's still way way down there. Also, if it's not used for backup (and I don't think anybody would), there's actually less reason to be back-wards compatible. I know I changed cramfs a few times incompatibly, simply becaus "you might as well just re-run the user tools to generate the image". It was for a similar need, and the image really always goes along with the kernel. I think squashfs usage would be similar - you'd not have squashfs as a standalone media, it would be a "installation medium" thing. Linus -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html