> But unfortunately we have only 255 loopback devices, don't we?
We had those. But with 32 bit majors/minors, we can build far more (2^20 minors are available). And from reading the patch, it seems it can already take advantage of that (it uses MINOR_BITS to calculate the maximum minor number, and I assume MINOR_BITS is set to 20, i.e. the correct value).
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