[PATCHv3 1/4] block: support polling through blk_execute_rq

[Christoph Hellwig]

On Fri, May 21, 2021 at 01:21:42PM -0700, Keith Busch wrote:
> Poll for completions if the request's hctx is a polling type.
> 
> Signed-off-by: Keith Busch <kbusch at kernel.org>

Looks good,

Reviewed-by: Christoph Hellwig <hch at lst.de>