[PATCH] ubifs: add CONFIG_BLOCK dependency for encryption

[Christoph Hellwig]

On Fri, Dec 16, 2016 at 10:26:35AM +0100, Richard Weinberger wrote:
> > The easiest way out is to limit UBIFS_FS_ENCRYPTION to configurations
> > that also enable BLOCK.
> 
> Thanks for the fix!
> I'll queue this for -rc2.
> 
> In the long-run I'd like to remove the CONFIG_BLOCK dependency from fs/crypto/crypto.c
> since UBIFS does not use the block related functions at all.

I would much prefer if you did that fixup now.  Either by moving
all the block code into a new fs/crypto/bio.c or if that's too hard
by just sprinkling ifdefs.