Re: [PATCH] block: Revert v5.0 blk_mq_request_issue_directly() changes

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On Thu, Apr 04, 2019 at 10:08:43AM -0700, Bart Van Assche wrote:
> blk_mq_try_issue_directly() can return BLK_STS*_RESOURCE for requests that
> have been queued. If that happens when blk_mq_try_issue_directly() is called
> by the dm-mpath driver then dm-mpath will try to resubmit a request that is
> already queued and a kernel crash follows. Since it is nontrivial to fix
> blk_mq_request_issue_directly(), revert the blk_mq_request_issue_directly()
> changes that went into kernel v5.0.

And what are we going to do about 5.1+?



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