On-disk format robustness requirements for new filesystems

I think you think too short.

Some of the android things are too specific for android. But some of the concepts needed there are also things that you need in other problem domains (e.g. embedded). And if EROFS is in Linux, then other projects (often in Embedded) might use it as well. It might actually already in use today :-)

> or at least bug reports for existing filesystems.

They are. Hellwig said for XFS that they make great strides for the v5 version, T'so said that for ext4 they work on this, just not with high priority. So warm up your fuzzer and start submitting bug reports :-)