Re: [PATCH 1/2] blk-mq: get rid of manual run of queue with __blk_mq_run_hw_queue()

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From c69bf02929d9c37d193b004a4c3c85c1142fa996 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Thu, 22 Sep 2016 11:38:23 -0700
Subject: blk-mq: remove non-blocking pass in blk_mq_map_request

bt_get already does a non-blocking pass as well as running the queue
when scheduling internally, no need to duplicate it.

Looks good too,

Reviewed-by: Sagi Grimberg <sagi@grimberg.me>

Question (while we're on the subject):
Do consumers have a way to restrict blk-mq to block on
lack of tags? I'm thinking in the context of nvme-target
that can do more useful things than waiting for a tag...