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From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Fri, 7 Oct 2016 08:25:59 -0700
Message-ID: <CA+55aFzJHGVB5UvBifCvNX9YkDG1Soh+z9ED-wfF1OfOCPJPKA@mail.gmail.com>
Subject: Re: local DoS - systemd hang or timeout (WAS: Re: [RFC][CFT]
 splice_read reworked)
To: Dave Chinner <david@fromorbit.com>
Cc: CAI Qian <caiqian@redhat.com>, Al Viro <viro@zeniv.linux.org.uk>,
        tj <tj@kernel.org>, linux-xfs <linux-xfs@vger.kernel.org>,
        Jens Axboe <axboe@kernel.dk>, Nick Piggin <npiggin@gmail.com>,
        linux-fsdevel <linux-fsdevel@vger.kernel.org>
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On Fri, Oct 7, 2016 at 2:57 AM, Dave Chinner <david@fromorbit.com> wrote:
>
> So it's not "fixed" and instead I'm ignoring it.  If you spend any
> amount of time running lockdep on XFS you'll get as sick and tired
> of playing this whack-a-lockdep-false-positive game as I am.

Thanks for the background here. I'll try to remember it for the next
time this comes up, it doesn't help that lockdep reports are often a
bit cryptic to begin with (that "interrupt" thing certainly didn't
help).

             Linus