[patch] md(4) and preloaded memory disks

[Poul-Henning Kamp]

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In message <20121106182752.GB2234 at a91-153-116-96.elisa-laajakaista.fi>, Jaakko 
Heinonen writes:

>I plan to commit the patch below to disallow attaching preloaded memory
>disks via ioctl. I didn't find anything that would really use this
>undocumented feature.

If I remember right, this was for the case where you had preloaded
multiple images, and the kernel would only auto-discover the first
one.

All things (such as the disapperance of floppy disks),  considered
this feature should be removed.


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