That's actually remarkably close to being possible. Loopback mounts
have already been fixed not to rely on /etc/mtab. The only major
piece missing is "user" mounts, and there's already a patchset for
that waiting for review by the VFS maintainers. After that, it's just
a "simple" issue of fixing up all the userspace pieces. Could be
finished in the next decade, possibly ;)
Miklos
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