[PATCH V2 3/3] Revert "block: Fix a lockdep complaint triggered by request queue flushing"

[Christoph Hellwig]

On Fri, Nov 13, 2020 at 09:27:22AM +0800, Ming Lei wrote:
> >From a519f421957a1205918e9bcc15087d15234e4e9f Mon Sep 17 00:00:00 2001
> From: Ming Lei <ming.lei at redhat.com>
> Date: Thu, 12 Nov 2020 09:56:02 +0800
> Subject: [PATCH V2 3/3] Revert "block: Fix a lockdep complaint triggered by
>  request queue flushing"
> 
> This reverts commit b3c6a59975415bde29cfd76ff1ab008edbf614a9.
> 
> Now we can avoid nvme-loop lockdep warning of 'lockdep possible recursive
> locking' by nvme-loop's lock class, no need to apply dynamically
> allocated lock class key, so revert commit b3c6a5997541("block: Fix a
> lockdep complaint triggered by request queue flushing").
> 
> This way fixes horrible SCSI probe delay issue on megaraid_sas(host_tagset is 1),
> and it is reported the whole probe may take more than half an hour. The reason

There are a bunch of overly long lines in the commit log.

Otherwise this looks good:

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