Re: [PATCH V7 4/6] block: prepare for passing RQF_PREEMPT to request allocation

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

As mentioned in the reply to Bart, I'd much rather use BLK_MQ_REQ_*
for the sane blk_get_request version (which should have the same
prototype as blk_mq_alloc_request) instead of having another flags
namespace.