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From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed, 26 Oct 2016 15:58:43 -0700
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Subject: Re: bio linked list corruption.
To: Dave Jones <davej@codemonkey.org.uk>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Chris Mason <clm@fb.com>, Andy Lutomirski <luto@amacapital.net>,
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        David Sterba <dsterba@suse.com>,
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        Linux Kernel <linux-kernel@vger.kernel.org>,
        Dave Chinner <david@fromorbit.com>
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On Wed, Oct 26, 2016 at 3:51 PM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> Dave: it might be a good idea to split that "WARN_ON_ONCE()" in
> blk_mq_merge_queue_io() into two

I did that myself too, since Dave sees this during boot.

But I'm not getting the warning ;(

Dave gets it with ext4, and thats' what I have too, so I'm not sure
what the required trigger would be.

              Linus