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Date:   Wed, 6 Dec 2017 16:32:26 -0800
From:   Andrew Morton <>
To:     Byungchul Park <>
Cc:     Dmitry Vyukov <>, Jan Kara <>,
        Johannes Weiner <>,,
        LKML <>,
        Linux-MM <>,
        Mel Gorman <>,,,,
        Peter Zijlstra <>,
Subject: Re: possible deadlock in generic_file_write_iter (2)

On Wed, 6 Dec 2017 14:05:47 +0900 Byungchul Park <> 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..

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