[PATCH v6 05/11] block: remove split code in blkdev_issue_{discard,write_same}B

[Christoph Hellwig]

On Wed, Oct 14, 2015 at 04:38:50PM +0000, Keith Busch wrote:
> I see why the proposal is an improvement, but I don't understand why the
> current situation results in a hang. Are we missing some kind of error
> recovery in the driver?

The driver tries to abort the commands and eventually gets into a death
spiral.  I'm still trying to understand what exactly is going on.