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Date: Wed, 6 Dec 2017 16:32:26 -0800
From: Andrew Morton <akpm@linux-foundation.org>
To: Byungchul Park <byungchul.park@lge.com>
Cc: Dmitry Vyukov <dvyukov@google.com>, Jan Kara <jack@suse.cz>,
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        Peter Zijlstra <peterz@infradead.org>, kernel-team@lge.com
Subject: Re: possible deadlock in generic_file_write_iter (2)
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On Wed, 6 Dec 2017 14:05:47 +0900 Byungchul Park <byungchul.park@lge.com> wrote:

> > What is cross-release? Is it something new? Should we always enable
> > crossrelease_fullstack during testing?
> 
> Hello Dmitry,
> 
> Yes, it's new one making lockdep track wait_for_completion() as well.
> 
> And we should enable crossrelease_fullstack if you don't care system
> slowdown but testing.

We should update Documentation/process/submit-checklist.rst section 12.
But that list doesn't even mention CONFIG_LOCKDEP so a bit of
maintenance work will be needed there..