UBI_READWRITE constraint when opening volumes to rename

[Artem Bityutskiy]

On Mon, 2014-10-20 at 14:42 +0200, Richard Weinberger wrote:
> BTW: one corner case is the volume delete operation.
> It touches meta data and LEBs. Currently you need exclusive mode for this.
> IMHO it makes sense to deny metaonly mode if an UBI volume is opened in exclusive mode.

Oh, yes, the 'delete' semantics is that volume goes away and all the
space it had reserved becomes available, so the data it contained is
thrown away, so the operation does affect the data.

Artem.