There is a ramdisk block device (brd), and there is a null multiqueue device (nullblk). The one can do I/O, but doesn't use multiqueue, and the other does multiqueue but cannot do I/O.
So the idea is to have a new multiqueue ramdisk block device (ramblk?), which can do both. Would be most useful for testing multiqueue.
Even jeffm said so :-)
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