That's how the shmfs stuff is done. Ditto for procfs, etc. Folks, give it a try. There may be bugs. I think that it's cleaner than the old code, but don't let it play with critical data.
Bug reports are more than welcome, indeed.
General comments on the patch are also welcome, indeed. WAN now merged 4. VM needs rebalancing or we have a bad leak 5. SHM works chroot 6. SHM back compatibility 7.