[PATCH] UBI: Block: Add blk-mq support

[Christoph Hellwig]

On Sun, Nov 02, 2014 at 02:00:55PM +0100, Richard Weinberger wrote:
> +#define UBIBLOCK_SG_COUNT 64


Can you document why you choose this number? The default nr_request
for the old code would be 128.

Also I'll send a patch ASAP that allows drivers to ensure their
->queue_rq is always called from a driver-specific workqueue, which
should simplify the bui block driver a lot.